Trigonometria Exemplos

{cos}^{2} (3 x) - {sin}^{2} (3 x)

$\cos^{2} (3 x) - \sin^{2} (3 x)$

Etapa 1

Como os dois termos são quadrados perfeitos, fatore usando a fórmula da diferença de quadrados,

$a^{2} - b^{2} = (a + b) (a - b)$ em que

$a = \cos (3 x)$ e

$b = \sin (3 x)$ .

$(\cos (3 x) + \sin (3 x)) (\cos (3 x) - \sin (3 x))$

Etapa 2

Simplifique os termos.

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Etapa 2.1

Simplifique cada termo.

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Etapa 2.1.1

Use a fórmula do arco triplo para transformar

$\cos (3 x)$ em

$4 \cos^{3} (x) - 3 \cos (x)$ .

$(4 \cos^{3} (x) - 3 \cos (x) + \sin (3 x)) (\cos (3 x) - \sin (3 x))$

Etapa 2.1.2

Aplique a fórmula do arco triplo do seno.

$(4 \cos^{3} (x) - 3 \cos (x) - 4 \sin^{3} (x) + 3 \sin (x)) (\cos (3 x) - \sin (3 x))$

Etapa 2.2

Simplifique cada termo.

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Etapa 2.2.1

Use a fórmula do arco triplo para transformar

$\cos (3 x)$ em

$4 \cos^{3} (x) - 3 \cos (x)$ .

$(4 \cos^{3} (x) - 3 \cos (x) - 4 \sin^{3} (x) + 3 \sin (x)) (4 \cos^{3} (x) - 3 \cos (x) - \sin (3 x))$

Etapa 2.2.2

Aplique a fórmula do arco triplo do seno.

$(4 \cos^{3} (x) - 3 \cos (x) - 4 \sin^{3} (x) + 3 \sin (x)) (4 \cos^{3} (x) - 3 \cos (x) - (- 4 \sin^{3} (x) + 3 \sin (x)))$

Etapa 2.2.3

Aplique a propriedade distributiva.

$(4 \cos^{3} (x) - 3 \cos (x) - 4 \sin^{3} (x) + 3 \sin (x)) (4 \cos^{3} (x) - 3 \cos (x) - (- 4 \sin^{3} (x)) - (3 \sin (x)))$

Etapa 2.2.4

Multiplique

$- 4$ por

$- 1$ .

$(4 \cos^{3} (x) - 3 \cos (x) - 4 \sin^{3} (x) + 3 \sin (x)) (4 \cos^{3} (x) - 3 \cos (x) + 4 \sin^{3} (x) - (3 \sin (x)))$

Etapa 2.2.5

Multiplique

$3$ por

$- 1$ .

$(4 \cos^{3} (x) - 3 \cos (x) - 4 \sin^{3} (x) + 3 \sin (x)) (4 \cos^{3} (x) - 3 \cos (x) + 4 \sin^{3} (x) - 3 \sin (x))$

Etapa 3

Expanda

$(4 \cos^{3} (x) - 3 \cos (x) - 4 \sin^{3} (x) + 3 \sin (x)) (4 \cos^{3} (x) - 3 \cos (x) + 4 \sin^{3} (x) - 3 \sin (x))$ multiplicando cada termo na primeira expressão por cada um dos termos na segunda expressão.

$4 \cos^{3} (x) (4 \cos^{3} (x)) + 4 \cos^{3} (x) (- 3 \cos (x)) + 4 \cos^{3} (x) (4 \sin^{3} (x)) + 4 \cos^{3} (x) (- 3 \sin (x)) - 3 \cos (x) (4 \cos^{3} (x)) - 3 \cos (x) (- 3 \cos (x)) - 3 \cos (x) (4 \sin^{3} (x)) - 3 \cos (x) (- 3 \sin (x)) - 4 \sin^{3} (x) (4 \cos^{3} (x)) - 4 \sin^{3} (x) (- 3 \cos (x)) - 4 \sin^{3} (x) (4 \sin^{3} (x)) - 4 \sin^{3} (x) (- 3 \sin (x)) + 3 \sin (x) (4 \cos^{3} (x)) + 3 \sin (x) (- 3 \cos (x)) + 3 \sin (x) (4 \sin^{3} (x)) + 3 \sin (x) (- 3 \sin (x))$

Etapa 4

Simplifique os termos.

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Etapa 4.1

Combine os termos opostos em

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Etapa 4.1.1

Reorganize os fatores nos termos

$4 \cos^{3} (x) (4 \sin^{3} (x))$ e

$- 4 \sin^{3} (x) (4 \cos^{3} (x))$ .

$4 \cos^{3} (x) (4 \cos^{3} (x)) + 4 \cos^{3} (x) (- 3 \cos (x)) + 4 \cdot 4 \cos^{3} (x) \sin^{3} (x) + 4 \cos^{3} (x) (- 3 \sin (x)) - 3 \cos (x) (4 \cos^{3} (x)) - 3 \cos (x) (- 3 \cos (x)) - 3 \cos (x) (4 \sin^{3} (x)) - 3 \cos (x) (- 3 \sin (x)) - 4 \cdot 4 \cos^{3} (x) \sin^{3} (x) - 4 \sin^{3} (x) (- 3 \cos (x)) - 4 \sin^{3} (x) (4 \sin^{3} (x)) - 4 \sin^{3} (x) (- 3 \sin (x)) + 3 \sin (x) (4 \cos^{3} (x)) + 3 \sin (x) (- 3 \cos (x)) + 3 \sin (x) (4 \sin^{3} (x)) + 3 \sin (x) (- 3 \sin (x))$

Etapa 4.1.2

Subtraia

$4 \cdot 4 \cos^{3} (x) \sin^{3} (x)$ de

$4 \cdot 4 \cos^{3} (x) \sin^{3} (x)$ .

$4 \cos^{3} (x) (4 \cos^{3} (x)) + 4 \cos^{3} (x) (- 3 \cos (x)) + 4 \cos^{3} (x) (- 3 \sin (x)) - 3 \cos (x) (4 \cos^{3} (x)) - 3 \cos (x) (- 3 \cos (x)) - 3 \cos (x) (4 \sin^{3} (x)) - 3 \cos (x) (- 3 \sin (x)) + 0 - 4 \sin^{3} (x) (- 3 \cos (x)) - 4 \sin^{3} (x) (4 \sin^{3} (x)) - 4 \sin^{3} (x) (- 3 \sin (x)) + 3 \sin (x) (4 \cos^{3} (x)) + 3 \sin (x) (- 3 \cos (x)) + 3 \sin (x) (4 \sin^{3} (x)) + 3 \sin (x) (- 3 \sin (x))$

Etapa 4.1.3

Some

$0$ .

$4 \cos^{3} (x) (4 \cos^{3} (x)) + 4 \cos^{3} (x) (- 3 \cos (x)) + 4 \cos^{3} (x) (- 3 \sin (x)) - 3 \cos (x) (4 \cos^{3} (x)) - 3 \cos (x) (- 3 \cos (x)) - 3 \cos (x) (4 \sin^{3} (x)) - 3 \cos (x) (- 3 \sin (x)) - 4 \sin^{3} (x) (- 3 \cos (x)) - 4 \sin^{3} (x) (4 \sin^{3} (x)) - 4 \sin^{3} (x) (- 3 \sin (x)) + 3 \sin (x) (4 \cos^{3} (x)) + 3 \sin (x) (- 3 \cos (x)) + 3 \sin (x) (4 \sin^{3} (x)) + 3 \sin (x) (- 3 \sin (x))$

Etapa 4.1.4

Reorganize os fatores nos termos

$4 \cos^{3} (x) (- 3 \sin (x))$ e

$3 \sin (x) (4 \cos^{3} (x))$ .

$4 \cos^{3} (x) (4 \cos^{3} (x)) + 4 \cos^{3} (x) (- 3 \cos (x)) - 3 \cdot 4 \cos^{3} (x) \sin (x) - 3 \cos (x) (4 \cos^{3} (x)) - 3 \cos (x) (- 3 \cos (x)) - 3 \cos (x) (4 \sin^{3} (x)) - 3 \cos (x) (- 3 \sin (x)) - 4 \sin^{3} (x) (- 3 \cos (x)) - 4 \sin^{3} (x) (4 \sin^{3} (x)) - 4 \sin^{3} (x) (- 3 \sin (x)) + 3 \cdot 4 \cos^{3} (x) \sin (x) + 3 \sin (x) (- 3 \cos (x)) + 3 \sin (x) (4 \sin^{3} (x)) + 3 \sin (x) (- 3 \sin (x))$

Etapa 4.1.5

Some

$- 3 \cdot 4 \cos^{3} (x) \sin (x)$ e

$3 \cdot 4 \cos^{3} (x) \sin (x)$ .

$4 \cos^{3} (x) (4 \cos^{3} (x)) + 4 \cos^{3} (x) (- 3 \cos (x)) - 3 \cos (x) (4 \cos^{3} (x)) - 3 \cos (x) (- 3 \cos (x)) - 3 \cos (x) (4 \sin^{3} (x)) - 3 \cos (x) (- 3 \sin (x)) - 4 \sin^{3} (x) (- 3 \cos (x)) - 4 \sin^{3} (x) (4 \sin^{3} (x)) - 4 \sin^{3} (x) (- 3 \sin (x)) + 0 + 3 \sin (x) (- 3 \cos (x)) + 3 \sin (x) (4 \sin^{3} (x)) + 3 \sin (x) (- 3 \sin (x))$

Etapa 4.1.6

Some

$0$ .

$4 \cos^{3} (x) (4 \cos^{3} (x)) + 4 \cos^{3} (x) (- 3 \cos (x)) - 3 \cos (x) (4 \cos^{3} (x)) - 3 \cos (x) (- 3 \cos (x)) - 3 \cos (x) (4 \sin^{3} (x)) - 3 \cos (x) (- 3 \sin (x)) - 4 \sin^{3} (x) (- 3 \cos (x)) - 4 \sin^{3} (x) (4 \sin^{3} (x)) - 4 \sin^{3} (x) (- 3 \sin (x)) + 3 \sin (x) (- 3 \cos (x)) + 3 \sin (x) (4 \sin^{3} (x)) + 3 \sin (x) (- 3 \sin (x))$

Etapa 4.2

Simplifique cada termo.

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Etapa 4.2.1

Reescreva usando a propriedade comutativa da multiplicação.

$4 \cdot 4 \cos^{3} (x) \cos^{3} (x) + 4 \cos^{3} (x) (- 3 \cos (x)) - 3 \cos (x) (4 \cos^{3} (x)) - 3 \cos (x) (- 3 \cos (x)) - 3 \cos (x) (4 \sin^{3} (x)) - 3 \cos (x) (- 3 \sin (x)) - 4 \sin^{3} (x) (- 3 \cos (x)) - 4 \sin^{3} (x) (4 \sin^{3} (x)) - 4 \sin^{3} (x) (- 3 \sin (x)) + 3 \sin (x) (- 3 \cos (x)) + 3 \sin (x) (4 \sin^{3} (x)) + 3 \sin (x) (- 3 \sin (x))$

Etapa 4.2.2

Multiplique

$\cos^{3} (x)$ por

$\cos^{3} (x)$ somando os expoentes.

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Etapa 4.2.2.1

Mova

$\cos^{3} (x)$ .

$4 \cdot 4 (\cos^{3} (x) \cos^{3} (x)) + 4 \cos^{3} (x) (- 3 \cos (x)) - 3 \cos (x) (4 \cos^{3} (x)) - 3 \cos (x) (- 3 \cos (x)) - 3 \cos (x) (4 \sin^{3} (x)) - 3 \cos (x) (- 3 \sin (x)) - 4 \sin^{3} (x) (- 3 \cos (x)) - 4 \sin^{3} (x) (4 \sin^{3} (x)) - 4 \sin^{3} (x) (- 3 \sin (x)) + 3 \sin (x) (- 3 \cos (x)) + 3 \sin (x) (4 \sin^{3} (x)) + 3 \sin (x) (- 3 \sin (x))$

Etapa 4.2.2.2

Use a regra da multiplicação de potências

$a^{m} a^{n} = a^{m + n}$ para combinar expoentes.

$4 \cdot 4 {\cos (x)}^{3 + 3} + 4 \cos^{3} (x) (- 3 \cos (x)) - 3 \cos (x) (4 \cos^{3} (x)) - 3 \cos (x) (- 3 \cos (x)) - 3 \cos (x) (4 \sin^{3} (x)) - 3 \cos (x) (- 3 \sin (x)) - 4 \sin^{3} (x) (- 3 \cos (x)) - 4 \sin^{3} (x) (4 \sin^{3} (x)) - 4 \sin^{3} (x) (- 3 \sin (x)) + 3 \sin (x) (- 3 \cos (x)) + 3 \sin (x) (4 \sin^{3} (x)) + 3 \sin (x) (- 3 \sin (x))$

Etapa 4.2.2.3

Some

$3$ e

$3$ .

$4 \cdot 4 \cos^{6} (x) + 4 \cos^{3} (x) (- 3 \cos (x)) - 3 \cos (x) (4 \cos^{3} (x)) - 3 \cos (x) (- 3 \cos (x)) - 3 \cos (x) (4 \sin^{3} (x)) - 3 \cos (x) (- 3 \sin (x)) - 4 \sin^{3} (x) (- 3 \cos (x)) - 4 \sin^{3} (x) (4 \sin^{3} (x)) - 4 \sin^{3} (x) (- 3 \sin (x)) + 3 \sin (x) (- 3 \cos (x)) + 3 \sin (x) (4 \sin^{3} (x)) + 3 \sin (x) (- 3 \sin (x))$

Etapa 4.2.3

Multiplique

$4$ por

$4$ .

$16 \cos^{6} (x) + 4 \cos^{3} (x) (- 3 \cos (x)) - 3 \cos (x) (4 \cos^{3} (x)) - 3 \cos (x) (- 3 \cos (x)) - 3 \cos (x) (4 \sin^{3} (x)) - 3 \cos (x) (- 3 \sin (x)) - 4 \sin^{3} (x) (- 3 \cos (x)) - 4 \sin^{3} (x) (4 \sin^{3} (x)) - 4 \sin^{3} (x) (- 3 \sin (x)) + 3 \sin (x) (- 3 \cos (x)) + 3 \sin (x) (4 \sin^{3} (x)) + 3 \sin (x) (- 3 \sin (x))$

Etapa 4.2.4

Multiplique

$\cos^{3} (x)$ por

$\cos (x)$ somando os expoentes.

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Etapa 4.2.4.1

Mova

$\cos (x)$ .

$16 \cos^{6} (x) + 4 (\cos (x) \cos^{3} (x)) \cdot - 3 - 3 \cos (x) (4 \cos^{3} (x)) - 3 \cos (x) (- 3 \cos (x)) - 3 \cos (x) (4 \sin^{3} (x)) - 3 \cos (x) (- 3 \sin (x)) - 4 \sin^{3} (x) (- 3 \cos (x)) - 4 \sin^{3} (x) (4 \sin^{3} (x)) - 4 \sin^{3} (x) (- 3 \sin (x)) + 3 \sin (x) (- 3 \cos (x)) + 3 \sin (x) (4 \sin^{3} (x)) + 3 \sin (x) (- 3 \sin (x))$

Etapa 4.2.4.2

Multiplique

$\cos (x)$ por

$\cos^{3} (x)$ .

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Etapa 4.2.4.2.1

Eleve

$\cos (x)$ à potência de

$1$ .

$16 \cos^{6} (x) + 4 (\cos^{1} (x) \cos^{3} (x)) \cdot - 3 - 3 \cos (x) (4 \cos^{3} (x)) - 3 \cos (x) (- 3 \cos (x)) - 3 \cos (x) (4 \sin^{3} (x)) - 3 \cos (x) (- 3 \sin (x)) - 4 \sin^{3} (x) (- 3 \cos (x)) - 4 \sin^{3} (x) (4 \sin^{3} (x)) - 4 \sin^{3} (x) (- 3 \sin (x)) + 3 \sin (x) (- 3 \cos (x)) + 3 \sin (x) (4 \sin^{3} (x)) + 3 \sin (x) (- 3 \sin (x))$

Etapa 4.2.4.2.2

Use a regra da multiplicação de potências

$a^{m} a^{n} = a^{m + n}$ para combinar expoentes.

$16 \cos^{6} (x) + 4 {\cos (x)}^{1 + 3} \cdot - 3 - 3 \cos (x) (4 \cos^{3} (x)) - 3 \cos (x) (- 3 \cos (x)) - 3 \cos (x) (4 \sin^{3} (x)) - 3 \cos (x) (- 3 \sin (x)) - 4 \sin^{3} (x) (- 3 \cos (x)) - 4 \sin^{3} (x) (4 \sin^{3} (x)) - 4 \sin^{3} (x) (- 3 \sin (x)) + 3 \sin (x) (- 3 \cos (x)) + 3 \sin (x) (4 \sin^{3} (x)) + 3 \sin (x) (- 3 \sin (x))$

Etapa 4.2.4.3

Some

$1$ e

$3$ .

$16 \cos^{6} (x) + 4 \cos^{4} (x) \cdot - 3 - 3 \cos (x) (4 \cos^{3} (x)) - 3 \cos (x) (- 3 \cos (x)) - 3 \cos (x) (4 \sin^{3} (x)) - 3 \cos (x) (- 3 \sin (x)) - 4 \sin^{3} (x) (- 3 \cos (x)) - 4 \sin^{3} (x) (4 \sin^{3} (x)) - 4 \sin^{3} (x) (- 3 \sin (x)) + 3 \sin (x) (- 3 \cos (x)) + 3 \sin (x) (4 \sin^{3} (x)) + 3 \sin (x) (- 3 \sin (x))$

Etapa 4.2.5

Multiplique

$- 3$ por

$4$ .

$16 \cos^{6} (x) - 12 \cos^{4} (x) - 3 \cos (x) (4 \cos^{3} (x)) - 3 \cos (x) (- 3 \cos (x)) - 3 \cos (x) (4 \sin^{3} (x)) - 3 \cos (x) (- 3 \sin (x)) - 4 \sin^{3} (x) (- 3 \cos (x)) - 4 \sin^{3} (x) (4 \sin^{3} (x)) - 4 \sin^{3} (x) (- 3 \sin (x)) + 3 \sin (x) (- 3 \cos (x)) + 3 \sin (x) (4 \sin^{3} (x)) + 3 \sin (x) (- 3 \sin (x))$

Etapa 4.2.6

Multiplique

$\cos (x)$ por

$\cos^{3} (x)$ somando os expoentes.

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Etapa 4.2.6.1

Mova

$\cos^{3} (x)$ .

$16 \cos^{6} (x) - 12 \cos^{4} (x) - 3 (\cos^{3} (x) \cos (x)) \cdot 4 - 3 \cos (x) (- 3 \cos (x)) - 3 \cos (x) (4 \sin^{3} (x)) - 3 \cos (x) (- 3 \sin (x)) - 4 \sin^{3} (x) (- 3 \cos (x)) - 4 \sin^{3} (x) (4 \sin^{3} (x)) - 4 \sin^{3} (x) (- 3 \sin (x)) + 3 \sin (x) (- 3 \cos (x)) + 3 \sin (x) (4 \sin^{3} (x)) + 3 \sin (x) (- 3 \sin (x))$

Etapa 4.2.6.2

Multiplique

$\cos^{3} (x)$ por

$\cos (x)$ .

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Etapa 4.2.6.2.1

Eleve

$\cos (x)$ à potência de

$1$ .

$16 \cos^{6} (x) - 12 \cos^{4} (x) - 3 (\cos^{3} (x) \cos^{1} (x)) \cdot 4 - 3 \cos (x) (- 3 \cos (x)) - 3 \cos (x) (4 \sin^{3} (x)) - 3 \cos (x) (- 3 \sin (x)) - 4 \sin^{3} (x) (- 3 \cos (x)) - 4 \sin^{3} (x) (4 \sin^{3} (x)) - 4 \sin^{3} (x) (- 3 \sin (x)) + 3 \sin (x) (- 3 \cos (x)) + 3 \sin (x) (4 \sin^{3} (x)) + 3 \sin (x) (- 3 \sin (x))$

Etapa 4.2.6.2.2

Use a regra da multiplicação de potências

$a^{m} a^{n} = a^{m + n}$ para combinar expoentes.

$16 \cos^{6} (x) - 12 \cos^{4} (x) - 3 {\cos (x)}^{3 + 1} \cdot 4 - 3 \cos (x) (- 3 \cos (x)) - 3 \cos (x) (4 \sin^{3} (x)) - 3 \cos (x) (- 3 \sin (x)) - 4 \sin^{3} (x) (- 3 \cos (x)) - 4 \sin^{3} (x) (4 \sin^{3} (x)) - 4 \sin^{3} (x) (- 3 \sin (x)) + 3 \sin (x) (- 3 \cos (x)) + 3 \sin (x) (4 \sin^{3} (x)) + 3 \sin (x) (- 3 \sin (x))$

Etapa 4.2.6.3

Some

$3$ e

$1$ .

$16 \cos^{6} (x) - 12 \cos^{4} (x) - 3 \cos^{4} (x) \cdot 4 - 3 \cos (x) (- 3 \cos (x)) - 3 \cos (x) (4 \sin^{3} (x)) - 3 \cos (x) (- 3 \sin (x)) - 4 \sin^{3} (x) (- 3 \cos (x)) - 4 \sin^{3} (x) (4 \sin^{3} (x)) - 4 \sin^{3} (x) (- 3 \sin (x)) + 3 \sin (x) (- 3 \cos (x)) + 3 \sin (x) (4 \sin^{3} (x)) + 3 \sin (x) (- 3 \sin (x))$

Etapa 4.2.7

Multiplique

$4$ por

$- 3$ .

$16 \cos^{6} (x) - 12 \cos^{4} (x) - 12 \cos^{4} (x) - 3 \cos (x) (- 3 \cos (x)) - 3 \cos (x) (4 \sin^{3} (x)) - 3 \cos (x) (- 3 \sin (x)) - 4 \sin^{3} (x) (- 3 \cos (x)) - 4 \sin^{3} (x) (4 \sin^{3} (x)) - 4 \sin^{3} (x) (- 3 \sin (x)) + 3 \sin (x) (- 3 \cos (x)) + 3 \sin (x) (4 \sin^{3} (x)) + 3 \sin (x) (- 3 \sin (x))$

Etapa 4.2.8

Multiplique

$- 3 \cos (x) (- 3 \cos (x))$ .

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Etapa 4.2.8.1

Multiplique

$- 3$ por

$- 3$ .

$16 \cos^{6} (x) - 12 \cos^{4} (x) - 12 \cos^{4} (x) + 9 \cos (x) \cos (x) - 3 \cos (x) (4 \sin^{3} (x)) - 3 \cos (x) (- 3 \sin (x)) - 4 \sin^{3} (x) (- 3 \cos (x)) - 4 \sin^{3} (x) (4 \sin^{3} (x)) - 4 \sin^{3} (x) (- 3 \sin (x)) + 3 \sin (x) (- 3 \cos (x)) + 3 \sin (x) (4 \sin^{3} (x)) + 3 \sin (x) (- 3 \sin (x))$

Etapa 4.2.8.2

Eleve

$\cos (x)$ à potência de

$1$ .

$16 \cos^{6} (x) - 12 \cos^{4} (x) - 12 \cos^{4} (x) + 9 (\cos^{1} (x) \cos (x)) - 3 \cos (x) (4 \sin^{3} (x)) - 3 \cos (x) (- 3 \sin (x)) - 4 \sin^{3} (x) (- 3 \cos (x)) - 4 \sin^{3} (x) (4 \sin^{3} (x)) - 4 \sin^{3} (x) (- 3 \sin (x)) + 3 \sin (x) (- 3 \cos (x)) + 3 \sin (x) (4 \sin^{3} (x)) + 3 \sin (x) (- 3 \sin (x))$

Etapa 4.2.8.3

Eleve

$\cos (x)$ à potência de

$1$ .

$16 \cos^{6} (x) - 12 \cos^{4} (x) - 12 \cos^{4} (x) + 9 (\cos^{1} (x) \cos^{1} (x)) - 3 \cos (x) (4 \sin^{3} (x)) - 3 \cos (x) (- 3 \sin (x)) - 4 \sin^{3} (x) (- 3 \cos (x)) - 4 \sin^{3} (x) (4 \sin^{3} (x)) - 4 \sin^{3} (x) (- 3 \sin (x)) + 3 \sin (x) (- 3 \cos (x)) + 3 \sin (x) (4 \sin^{3} (x)) + 3 \sin (x) (- 3 \sin (x))$

Etapa 4.2.8.4

Use a regra da multiplicação de potências

$a^{m} a^{n} = a^{m + n}$ para combinar expoentes.

$16 \cos^{6} (x) - 12 \cos^{4} (x) - 12 \cos^{4} (x) + 9 {\cos (x)}^{1 + 1} - 3 \cos (x) (4 \sin^{3} (x)) - 3 \cos (x) (- 3 \sin (x)) - 4 \sin^{3} (x) (- 3 \cos (x)) - 4 \sin^{3} (x) (4 \sin^{3} (x)) - 4 \sin^{3} (x) (- 3 \sin (x)) + 3 \sin (x) (- 3 \cos (x)) + 3 \sin (x) (4 \sin^{3} (x)) + 3 \sin (x) (- 3 \sin (x))$

Etapa 4.2.8.5

Some

$1$ e

$1$ .

$16 \cos^{6} (x) - 12 \cos^{4} (x) - 12 \cos^{4} (x) + 9 \cos^{2} (x) - 3 \cos (x) (4 \sin^{3} (x)) - 3 \cos (x) (- 3 \sin (x)) - 4 \sin^{3} (x) (- 3 \cos (x)) - 4 \sin^{3} (x) (4 \sin^{3} (x)) - 4 \sin^{3} (x) (- 3 \sin (x)) + 3 \sin (x) (- 3 \cos (x)) + 3 \sin (x) (4 \sin^{3} (x)) + 3 \sin (x) (- 3 \sin (x))$

Etapa 4.2.9

Multiplique

$4$ por

$- 3$ .

$16 \cos^{6} (x) - 12 \cos^{4} (x) - 12 \cos^{4} (x) + 9 \cos^{2} (x) - 12 \cos (x) \sin^{3} (x) - 3 \cos (x) (- 3 \sin (x)) - 4 \sin^{3} (x) (- 3 \cos (x)) - 4 \sin^{3} (x) (4 \sin^{3} (x)) - 4 \sin^{3} (x) (- 3 \sin (x)) + 3 \sin (x) (- 3 \cos (x)) + 3 \sin (x) (4 \sin^{3} (x)) + 3 \sin (x) (- 3 \sin (x))$

Etapa 4.2.10

Multiplique

$- 3$ por

$- 3$ .

$16 \cos^{6} (x) - 12 \cos^{4} (x) - 12 \cos^{4} (x) + 9 \cos^{2} (x) - 12 \cos (x) \sin^{3} (x) + 9 \cos (x) \sin (x) - 4 \sin^{3} (x) (- 3 \cos (x)) - 4 \sin^{3} (x) (4 \sin^{3} (x)) - 4 \sin^{3} (x) (- 3 \sin (x)) + 3 \sin (x) (- 3 \cos (x)) + 3 \sin (x) (4 \sin^{3} (x)) + 3 \sin (x) (- 3 \sin (x))$

Etapa 4.2.11

Multiplique

$- 3$ por

$- 4$ .

$16 \cos^{6} (x) - 12 \cos^{4} (x) - 12 \cos^{4} (x) + 9 \cos^{2} (x) - 12 \cos (x) \sin^{3} (x) + 9 \cos (x) \sin (x) + 12 \sin^{3} (x) \cos (x) - 4 \sin^{3} (x) (4 \sin^{3} (x)) - 4 \sin^{3} (x) (- 3 \sin (x)) + 3 \sin (x) (- 3 \cos (x)) + 3 \sin (x) (4 \sin^{3} (x)) + 3 \sin (x) (- 3 \sin (x))$

Etapa 4.2.12

Reescreva usando a propriedade comutativa da multiplicação.

$16 \cos^{6} (x) - 12 \cos^{4} (x) - 12 \cos^{4} (x) + 9 \cos^{2} (x) - 12 \cos (x) \sin^{3} (x) + 9 \cos (x) \sin (x) + 12 \sin^{3} (x) \cos (x) - 4 \cdot 4 \sin^{3} (x) \sin^{3} (x) - 4 \sin^{3} (x) (- 3 \sin (x)) + 3 \sin (x) (- 3 \cos (x)) + 3 \sin (x) (4 \sin^{3} (x)) + 3 \sin (x) (- 3 \sin (x))$

Etapa 4.2.13

Multiplique

$\sin^{3} (x)$ por

$\sin^{3} (x)$ somando os expoentes.

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Etapa 4.2.13.1

Mova

$\sin^{3} (x)$ .

$16 \cos^{6} (x) - 12 \cos^{4} (x) - 12 \cos^{4} (x) + 9 \cos^{2} (x) - 12 \cos (x) \sin^{3} (x) + 9 \cos (x) \sin (x) + 12 \sin^{3} (x) \cos (x) - 4 \cdot 4 (\sin^{3} (x) \sin^{3} (x)) - 4 \sin^{3} (x) (- 3 \sin (x)) + 3 \sin (x) (- 3 \cos (x)) + 3 \sin (x) (4 \sin^{3} (x)) + 3 \sin (x) (- 3 \sin (x))$

Etapa 4.2.13.2

Use a regra da multiplicação de potências

$a^{m} a^{n} = a^{m + n}$ para combinar expoentes.

$16 \cos^{6} (x) - 12 \cos^{4} (x) - 12 \cos^{4} (x) + 9 \cos^{2} (x) - 12 \cos (x) \sin^{3} (x) + 9 \cos (x) \sin (x) + 12 \sin^{3} (x) \cos (x) - 4 \cdot 4 {\sin (x)}^{3 + 3} - 4 \sin^{3} (x) (- 3 \sin (x)) + 3 \sin (x) (- 3 \cos (x)) + 3 \sin (x) (4 \sin^{3} (x)) + 3 \sin (x) (- 3 \sin (x))$

Etapa 4.2.13.3

Some

$3$ e

$3$ .

$16 \cos^{6} (x) - 12 \cos^{4} (x) - 12 \cos^{4} (x) + 9 \cos^{2} (x) - 12 \cos (x) \sin^{3} (x) + 9 \cos (x) \sin (x) + 12 \sin^{3} (x) \cos (x) - 4 \cdot 4 \sin^{6} (x) - 4 \sin^{3} (x) (- 3 \sin (x)) + 3 \sin (x) (- 3 \cos (x)) + 3 \sin (x) (4 \sin^{3} (x)) + 3 \sin (x) (- 3 \sin (x))$

Etapa 4.2.14

Multiplique

$- 4$ por

$4$ .

$16 \cos^{6} (x) - 12 \cos^{4} (x) - 12 \cos^{4} (x) + 9 \cos^{2} (x) - 12 \cos (x) \sin^{3} (x) + 9 \cos (x) \sin (x) + 12 \sin^{3} (x) \cos (x) - 16 \sin^{6} (x) - 4 \sin^{3} (x) (- 3 \sin (x)) + 3 \sin (x) (- 3 \cos (x)) + 3 \sin (x) (4 \sin^{3} (x)) + 3 \sin (x) (- 3 \sin (x))$

Etapa 4.2.15

Multiplique

$\sin^{3} (x)$ por

$\sin (x)$ somando os expoentes.

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Etapa 4.2.15.1

Mova

$\sin (x)$ .

$16 \cos^{6} (x) - 12 \cos^{4} (x) - 12 \cos^{4} (x) + 9 \cos^{2} (x) - 12 \cos (x) \sin^{3} (x) + 9 \cos (x) \sin (x) + 12 \sin^{3} (x) \cos (x) - 16 \sin^{6} (x) - 4 (\sin (x) \sin^{3} (x)) \cdot - 3 + 3 \sin (x) (- 3 \cos (x)) + 3 \sin (x) (4 \sin^{3} (x)) + 3 \sin (x) (- 3 \sin (x))$

Etapa 4.2.15.2

Multiplique

$\sin (x)$ por

$\sin^{3} (x)$ .

Toque para ver mais passagens...

Etapa 4.2.15.2.1

Eleve

$\sin (x)$ à potência de

$1$ .

$16 \cos^{6} (x) - 12 \cos^{4} (x) - 12 \cos^{4} (x) + 9 \cos^{2} (x) - 12 \cos (x) \sin^{3} (x) + 9 \cos (x) \sin (x) + 12 \sin^{3} (x) \cos (x) - 16 \sin^{6} (x) - 4 (\sin^{1} (x) \sin^{3} (x)) \cdot - 3 + 3 \sin (x) (- 3 \cos (x)) + 3 \sin (x) (4 \sin^{3} (x)) + 3 \sin (x) (- 3 \sin (x))$

Etapa 4.2.15.2.2

Use a regra da multiplicação de potências

$a^{m} a^{n} = a^{m + n}$ para combinar expoentes.

$16 \cos^{6} (x) - 12 \cos^{4} (x) - 12 \cos^{4} (x) + 9 \cos^{2} (x) - 12 \cos (x) \sin^{3} (x) + 9 \cos (x) \sin (x) + 12 \sin^{3} (x) \cos (x) - 16 \sin^{6} (x) - 4 {\sin (x)}^{1 + 3} \cdot - 3 + 3 \sin (x) (- 3 \cos (x)) + 3 \sin (x) (4 \sin^{3} (x)) + 3 \sin (x) (- 3 \sin (x))$

Etapa 4.2.15.3

Some

$1$ e

$3$ .

$16 \cos^{6} (x) - 12 \cos^{4} (x) - 12 \cos^{4} (x) + 9 \cos^{2} (x) - 12 \cos (x) \sin^{3} (x) + 9 \cos (x) \sin (x) + 12 \sin^{3} (x) \cos (x) - 16 \sin^{6} (x) - 4 \sin^{4} (x) \cdot - 3 + 3 \sin (x) (- 3 \cos (x)) + 3 \sin (x) (4 \sin^{3} (x)) + 3 \sin (x) (- 3 \sin (x))$

Etapa 4.2.16

Multiplique

$- 3$ por

$- 4$ .

$16 \cos^{6} (x) - 12 \cos^{4} (x) - 12 \cos^{4} (x) + 9 \cos^{2} (x) - 12 \cos (x) \sin^{3} (x) + 9 \cos (x) \sin (x) + 12 \sin^{3} (x) \cos (x) - 16 \sin^{6} (x) + 12 \sin^{4} (x) + 3 \sin (x) (- 3 \cos (x)) + 3 \sin (x) (4 \sin^{3} (x)) + 3 \sin (x) (- 3 \sin (x))$

Etapa 4.2.17

Multiplique

$- 3$ por

$3$ .

$16 \cos^{6} (x) - 12 \cos^{4} (x) - 12 \cos^{4} (x) + 9 \cos^{2} (x) - 12 \cos (x) \sin^{3} (x) + 9 \cos (x) \sin (x) + 12 \sin^{3} (x) \cos (x) - 16 \sin^{6} (x) + 12 \sin^{4} (x) - 9 \sin (x) \cos (x) + 3 \sin (x) (4 \sin^{3} (x)) + 3 \sin (x) (- 3 \sin (x))$

Etapa 4.2.18

Multiplique

$\sin (x)$ por

$\sin^{3} (x)$ somando os expoentes.

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Etapa 4.2.18.1

Mova

$\sin^{3} (x)$ .

$16 \cos^{6} (x) - 12 \cos^{4} (x) - 12 \cos^{4} (x) + 9 \cos^{2} (x) - 12 \cos (x) \sin^{3} (x) + 9 \cos (x) \sin (x) + 12 \sin^{3} (x) \cos (x) - 16 \sin^{6} (x) + 12 \sin^{4} (x) - 9 \sin (x) \cos (x) + 3 (\sin^{3} (x) \sin (x)) \cdot 4 + 3 \sin (x) (- 3 \sin (x))$

Etapa 4.2.18.2

Multiplique

$\sin^{3} (x)$ por

$\sin (x)$ .

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Etapa 4.2.18.2.1

Eleve

$\sin (x)$ à potência de

$1$ .

$16 \cos^{6} (x) - 12 \cos^{4} (x) - 12 \cos^{4} (x) + 9 \cos^{2} (x) - 12 \cos (x) \sin^{3} (x) + 9 \cos (x) \sin (x) + 12 \sin^{3} (x) \cos (x) - 16 \sin^{6} (x) + 12 \sin^{4} (x) - 9 \sin (x) \cos (x) + 3 (\sin^{3} (x) \sin^{1} (x)) \cdot 4 + 3 \sin (x) (- 3 \sin (x))$

Etapa 4.2.18.2.2

Use a regra da multiplicação de potências

$a^{m} a^{n} = a^{m + n}$ para combinar expoentes.

$16 \cos^{6} (x) - 12 \cos^{4} (x) - 12 \cos^{4} (x) + 9 \cos^{2} (x) - 12 \cos (x) \sin^{3} (x) + 9 \cos (x) \sin (x) + 12 \sin^{3} (x) \cos (x) - 16 \sin^{6} (x) + 12 \sin^{4} (x) - 9 \sin (x) \cos (x) + 3 {\sin (x)}^{3 + 1} \cdot 4 + 3 \sin (x) (- 3 \sin (x))$

Etapa 4.2.18.3

Some

$3$ e

$1$ .

Etapa 4.2.19

Multiplique

$4$ por

$3$ .

Etapa 4.2.20

Multiplique

$3 \sin (x) (- 3 \sin (x))$ .

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Etapa 4.2.20.1

Multiplique

$- 3$ por

$3$ .

Etapa 4.2.20.2

Eleve

$\sin (x)$ à potência de

$1$ .

Etapa 4.2.20.3

Eleve

$\sin (x)$ à potência de

$1$ .

Etapa 4.2.20.4

Use a regra da multiplicação de potências

$a^{m} a^{n} = a^{m + n}$ para combinar expoentes.

Etapa 4.2.20.5

Some

$1$ e

$1$ .

Etapa 4.3

Simplifique somando os termos.

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Etapa 4.3.1

Combine os termos opostos em

Toque para ver mais passagens...

Etapa 4.3.1.1

Reorganize os fatores nos termos

$- 12 \cos (x) \sin^{3} (x)$ e

$12 \sin^{3} (x) \cos (x)$ .

$16 \cos^{6} (x) - 12 \cos^{4} (x) - 12 \cos^{4} (x) + 9 \cos^{2} (x) - 12 \sin^{3} (x) \cos (x) + 9 \cos (x) \sin (x) + 12 \sin^{3} (x) \cos (x) - 16 \sin^{6} (x) + 12 \sin^{4} (x) - 9 \sin (x) \cos (x) + 12 \sin^{4} (x) - 9 \sin^{2} (x)$

Etapa 4.3.1.2

Some

$- 12 \sin^{3} (x) \cos (x)$ e

$12 \sin^{3} (x) \cos (x)$ .

$16 \cos^{6} (x) - 12 \cos^{4} (x) - 12 \cos^{4} (x) + 9 \cos^{2} (x) + 9 \cos (x) \sin (x) + 0 - 16 \sin^{6} (x) + 12 \sin^{4} (x) - 9 \sin (x) \cos (x) + 12 \sin^{4} (x) - 9 \sin^{2} (x)$

Etapa 4.3.1.3

Some

$16 \cos^{6} (x) - 12 \cos^{4} (x) - 12 \cos^{4} (x) + 9 \cos^{2} (x) + 9 \cos (x) \sin (x)$ e

$0$ .

$16 \cos^{6} (x) - 12 \cos^{4} (x) - 12 \cos^{4} (x) + 9 \cos^{2} (x) + 9 \cos (x) \sin (x) - 16 \sin^{6} (x) + 12 \sin^{4} (x) - 9 \sin (x) \cos (x) + 12 \sin^{4} (x) - 9 \sin^{2} (x)$

Etapa 4.3.1.4

Reorganize os fatores nos termos

$9 \cos (x) \sin (x)$ e

$- 9 \sin (x) \cos (x)$ .

$16 \cos^{6} (x) - 12 \cos^{4} (x) - 12 \cos^{4} (x) + 9 \cos^{2} (x) + 9 \cos (x) \sin (x) - 16 \sin^{6} (x) + 12 \sin^{4} (x) - 9 \cos (x) \sin (x) + 12 \sin^{4} (x) - 9 \sin^{2} (x)$

Etapa 4.3.1.5

Subtraia

$9 \cos (x) \sin (x)$ de

$9 \cos (x) \sin (x)$ .

$16 \cos^{6} (x) - 12 \cos^{4} (x) - 12 \cos^{4} (x) + 9 \cos^{2} (x) + 0 - 16 \sin^{6} (x) + 12 \sin^{4} (x) + 12 \sin^{4} (x) - 9 \sin^{2} (x)$

Etapa 4.3.1.6

Some

$16 \cos^{6} (x) - 12 \cos^{4} (x) - 12 \cos^{4} (x) + 9 \cos^{2} (x)$ e

$0$ .

$16 \cos^{6} (x) - 12 \cos^{4} (x) - 12 \cos^{4} (x) + 9 \cos^{2} (x) - 16 \sin^{6} (x) + 12 \sin^{4} (x) + 12 \sin^{4} (x) - 9 \sin^{2} (x)$

Etapa 4.3.2

Subtraia

$12 \cos^{4} (x)$ de

$- 12 \cos^{4} (x)$ .

$16 \cos^{6} (x) - 24 \cos^{4} (x) + 9 \cos^{2} (x) - 16 \sin^{6} (x) + 12 \sin^{4} (x) + 12 \sin^{4} (x) - 9 \sin^{2} (x)$

Etapa 4.3.3

Some

$12 \sin^{4} (x)$ e

$12 \sin^{4} (x)$ .

$16 \cos^{6} (x) - 24 \cos^{4} (x) + 9 \cos^{2} (x) - 16 \sin^{6} (x) + 24 \sin^{4} (x) - 9 \sin^{2} (x)$