Cálculo Ejemplos

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

Paso 1

Como $3$ es constante con respecto a $x$ , la derivada de $3 (\sin (x) + \cos (x)) (\sin (x) - \cos (x))$ con respecto a $x$ es $3 \frac{d}{d x} [(\sin (x) + \cos (x)) (\sin (x) - \cos (x))]$ .

$3 \frac{d}{d x} [(\sin (x) + \cos (x)) (\sin (x) - \cos (x))]$

Paso 2

Diferencia con la regla del producto, que establece que $\frac{d}{d x} [f (x) g (x)]$ es $f (x) \frac{d}{d x} [g (x)] + g (x) \frac{d}{d x} [f (x)]$ donde $f (x) = \sin (x) + \cos (x)$ y $g (x) = \sin (x) - \cos (x)$ .

$3 ((\sin (x) + \cos (x)) \frac{d}{d x} [\sin (x) - \cos (x)] + (\sin (x) - \cos (x)) \frac{d}{d x} [\sin (x) + \cos (x)])$

Paso 3

Según la regla de la suma, la derivada de $\sin (x) - \cos (x)$ con respecto a $x$ es $\frac{d}{d x} [\sin (x)] + \frac{d}{d x} [- \cos (x)]$ .

$3 ((\sin (x) + \cos (x)) (\frac{d}{d x} [\sin (x)] + \frac{d}{d x} [- \cos (x)]) + (\sin (x) - \cos (x)) \frac{d}{d x} [\sin (x) + \cos (x)])$

Paso 4

La derivada de $\sin (x)$ con respecto a $x$ es $\cos (x)$ .

$3 ((\sin (x) + \cos (x)) (\cos (x) + \frac{d}{d x} [- \cos (x)]) + (\sin (x) - \cos (x)) \frac{d}{d x} [\sin (x) + \cos (x)])$

Paso 5

Como $- 1$ es constante con respecto a $x$ , la derivada de $- \cos (x)$ con respecto a $x$ es $- \frac{d}{d x} [\cos (x)]$ .

$3 ((\sin (x) + \cos (x)) (\cos (x) - \frac{d}{d x} [\cos (x)]) + (\sin (x) - \cos (x)) \frac{d}{d x} [\sin (x) + \cos (x)])$

Paso 6

La derivada de $\cos (x)$ con respecto a $x$ es $- \sin (x)$ .

$3 ((\sin (x) + \cos (x)) (\cos (x) - - \sin (x)) + (\sin (x) - \cos (x)) \frac{d}{d x} [\sin (x) + \cos (x)])$

Paso 7

Diferencia con la regla de la suma.

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Paso 7.1

Multiplica $- 1$ por $- 1$ .

$3 ((\sin (x) + \cos (x)) (\cos (x) + 1 \sin (x)) + (\sin (x) - \cos (x)) \frac{d}{d x} [\sin (x) + \cos (x)])$

Paso 7.2

Multiplica $\sin (x)$ por $1$ .

$3 ((\sin (x) + \cos (x)) (\cos (x) + \sin (x)) + (\sin (x) - \cos (x)) \frac{d}{d x} [\sin (x) + \cos (x)])$

Paso 7.3

Según la regla de la suma, la derivada de $\sin (x) + \cos (x)$ con respecto a $x$ es $\frac{d}{d x} [\sin (x)] + \frac{d}{d x} [\cos (x)]$ .

$3 ((\sin (x) + \cos (x)) (\cos (x) + \sin (x)) + (\sin (x) - \cos (x)) (\frac{d}{d x} [\sin (x)] + \frac{d}{d x} [\cos (x)]))$

Paso 8

La derivada de $\sin (x)$ con respecto a $x$ es $\cos (x)$ .

$3 ((\sin (x) + \cos (x)) (\cos (x) + \sin (x)) + (\sin (x) - \cos (x)) (\cos (x) + \frac{d}{d x} [\cos (x)]))$

Paso 9

La derivada de $\cos (x)$ con respecto a $x$ es $- \sin (x)$ .

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

Paso 10

Simplifica.

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Paso 10.1

Aplica la propiedad distributiva.

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

Paso 10.2

Elimina los paréntesis.

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

Paso 10.3

Reordena los términos.

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

Paso 10.4

Simplifica cada término.

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Paso 10.4.1

Aplica la propiedad distributiva.

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

Paso 10.4.2

Expande $(3 \cos (x) + 3 \sin (x)) (\sin (x) + \cos (x))$ con el método PEIU (primero, exterior, interior, ultimo).

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Paso 10.4.2.1

Aplica la propiedad distributiva.

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

Paso 10.4.2.2

Aplica la propiedad distributiva.

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

Paso 10.4.2.3

Aplica la propiedad distributiva.

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

Paso 10.4.3

Simplifica y combina los términos similares.

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Paso 10.4.3.1

Simplifica cada término.

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Paso 10.4.3.1.1

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

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Paso 10.4.3.1.1.1

Eleva $\cos (x)$ a la potencia de $1$ .

$3 \cos (x) \sin (x) + 3 (\cos^{1} (x) \cos (x)) + 3 \sin (x) \sin (x) + 3 \sin (x) \cos (x) + 3 (\cos (x) - \sin (x)) (\sin (x) - \cos (x))$

Paso 10.4.3.1.1.2

Eleva $\cos (x)$ a la potencia de $1$ .

$3 \cos (x) \sin (x) + 3 (\cos^{1} (x) \cos^{1} (x)) + 3 \sin (x) \sin (x) + 3 \sin (x) \cos (x) + 3 (\cos (x) - \sin (x)) (\sin (x) - \cos (x))$

Paso 10.4.3.1.1.3

Usa la regla de la potencia $a^{m} a^{n} = a^{m + n}$ para combinar exponentes.

$3 \cos (x) \sin (x) + 3 {\cos (x)}^{1 + 1} + 3 \sin (x) \sin (x) + 3 \sin (x) \cos (x) + 3 (\cos (x) - \sin (x)) (\sin (x) - \cos (x))$

Paso 10.4.3.1.1.4

Suma $1$ y $1$ .

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

Paso 10.4.3.1.2

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

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Paso 10.4.3.1.2.1

Eleva $\sin (x)$ a la potencia de $1$ .

$3 \cos (x) \sin (x) + 3 \cos^{2} (x) + 3 (\sin^{1} (x) \sin (x)) + 3 \sin (x) \cos (x) + 3 (\cos (x) - \sin (x)) (\sin (x) - \cos (x))$

Paso 10.4.3.1.2.2

Eleva $\sin (x)$ a la potencia de $1$ .

$3 \cos (x) \sin (x) + 3 \cos^{2} (x) + 3 (\sin^{1} (x) \sin^{1} (x)) + 3 \sin (x) \cos (x) + 3 (\cos (x) - \sin (x)) (\sin (x) - \cos (x))$

Paso 10.4.3.1.2.3

Usa la regla de la potencia $a^{m} a^{n} = a^{m + n}$ para combinar exponentes.

$3 \cos (x) \sin (x) + 3 \cos^{2} (x) + 3 {\sin (x)}^{1 + 1} + 3 \sin (x) \cos (x) + 3 (\cos (x) - \sin (x)) (\sin (x) - \cos (x))$

Paso 10.4.3.1.2.4

Suma $1$ y $1$ .

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

Paso 10.4.3.2

Reordena los factores de $3 \sin (x) \cos (x)$ .

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

Paso 10.4.3.3

Suma $3 \cos (x) \sin (x)$ y $3 \cos (x) \sin (x)$ .

$6 \cos (x) \sin (x) + 3 \cos^{2} (x) + 3 \sin^{2} (x) + 3 (\cos (x) - \sin (x)) (\sin (x) - \cos (x))$

Paso 10.4.4

Factoriza $3$ de $3 \cos^{2} (x)$ .

$6 \cos (x) \sin (x) + 3 (\cos^{2} (x)) + 3 \sin^{2} (x) + 3 (\cos (x) - \sin (x)) (\sin (x) - \cos (x))$

Paso 10.4.5

Factoriza $3$ de $3 \sin^{2} (x)$ .

$6 \cos (x) \sin (x) + 3 (\cos^{2} (x)) + 3 (\sin^{2} (x)) + 3 (\cos (x) - \sin (x)) (\sin (x) - \cos (x))$

Paso 10.4.6

Factoriza $3$ de $3 (\cos^{2} (x)) + 3 (\sin^{2} (x))$ .

$6 \cos (x) \sin (x) + 3 (\cos^{2} (x) + \sin^{2} (x)) + 3 (\cos (x) - \sin (x)) (\sin (x) - \cos (x))$

Paso 10.4.7

Reorganiza los términos.

$6 \cos (x) \sin (x) + 3 (\sin^{2} (x) + \cos^{2} (x)) + 3 (\cos (x) - \sin (x)) (\sin (x) - \cos (x))$

Paso 10.4.8

Aplica la identidad pitagórica.

$6 \cos (x) \sin (x) + 3 \cdot 1 + 3 (\cos (x) - \sin (x)) (\sin (x) - \cos (x))$

Paso 10.4.9

Multiplica $3$ por $1$ .

$6 \cos (x) \sin (x) + 3 + 3 (\cos (x) - \sin (x)) (\sin (x) - \cos (x))$

Paso 10.4.10

Aplica la propiedad distributiva.

$6 \cos (x) \sin (x) + 3 + (3 \cos (x) + 3 (- \sin (x))) (\sin (x) - \cos (x))$

Paso 10.4.11

Multiplica $- 1$ por $3$ .

$6 \cos (x) \sin (x) + 3 + (3 \cos (x) - 3 \sin (x)) (\sin (x) - \cos (x))$

Paso 10.4.12

Expande $(3 \cos (x) - 3 \sin (x)) (\sin (x) - \cos (x))$ con el método PEIU (primero, exterior, interior, ultimo).

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Paso 10.4.12.1

Aplica la propiedad distributiva.

$6 \cos (x) \sin (x) + 3 + 3 \cos (x) (\sin (x) - \cos (x)) - 3 \sin (x) (\sin (x) - \cos (x))$

Paso 10.4.12.2

Aplica la propiedad distributiva.

$6 \cos (x) \sin (x) + 3 + 3 \cos (x) \sin (x) + 3 \cos (x) (- \cos (x)) - 3 \sin (x) (\sin (x) - \cos (x))$

Paso 10.4.12.3

Aplica la propiedad distributiva.

$6 \cos (x) \sin (x) + 3 + 3 \cos (x) \sin (x) + 3 \cos (x) (- \cos (x)) - 3 \sin (x) \sin (x) - 3 \sin (x) (- \cos (x))$

Paso 10.4.13

Simplifica y combina los términos similares.

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Paso 10.4.13.1

Simplifica cada término.

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Paso 10.4.13.1.1

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

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Paso 10.4.13.1.1.1

Multiplica $- 1$ por $3$ .

$6 \cos (x) \sin (x) + 3 + 3 \cos (x) \sin (x) - 3 \cos (x) \cos (x) - 3 \sin (x) \sin (x) - 3 \sin (x) (- \cos (x))$

Paso 10.4.13.1.1.2

Eleva $\cos (x)$ a la potencia de $1$ .

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

Paso 10.4.13.1.1.3

Eleva $\cos (x)$ a la potencia de $1$ .

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

Paso 10.4.13.1.1.4

Usa la regla de la potencia $a^{m} a^{n} = a^{m + n}$ para combinar exponentes.

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

Paso 10.4.13.1.1.5

Suma $1$ y $1$ .

$6 \cos (x) \sin (x) + 3 + 3 \cos (x) \sin (x) - 3 \cos^{2} (x) - 3 \sin (x) \sin (x) - 3 \sin (x) (- \cos (x))$

Paso 10.4.13.1.2

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

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Paso 10.4.13.1.2.1

Eleva $\sin (x)$ a la potencia de $1$ .

$6 \cos (x) \sin (x) + 3 + 3 \cos (x) \sin (x) - 3 \cos^{2} (x) - 3 (\sin^{1} (x) \sin (x)) - 3 \sin (x) (- \cos (x))$

Paso 10.4.13.1.2.2

Eleva $\sin (x)$ a la potencia de $1$ .

$6 \cos (x) \sin (x) + 3 + 3 \cos (x) \sin (x) - 3 \cos^{2} (x) - 3 (\sin^{1} (x) \sin^{1} (x)) - 3 \sin (x) (- \cos (x))$

Paso 10.4.13.1.2.3

Usa la regla de la potencia $a^{m} a^{n} = a^{m + n}$ para combinar exponentes.

$6 \cos (x) \sin (x) + 3 + 3 \cos (x) \sin (x) - 3 \cos^{2} (x) - 3 {\sin (x)}^{1 + 1} - 3 \sin (x) (- \cos (x))$

Paso 10.4.13.1.2.4

Suma $1$ y $1$ .

$6 \cos (x) \sin (x) + 3 + 3 \cos (x) \sin (x) - 3 \cos^{2} (x) - 3 \sin^{2} (x) - 3 \sin (x) (- \cos (x))$

Paso 10.4.13.1.3

Multiplica $- 1$ por $- 3$ .

$6 \cos (x) \sin (x) + 3 + 3 \cos (x) \sin (x) - 3 \cos^{2} (x) - 3 \sin^{2} (x) + 3 \sin (x) \cos (x)$

Paso 10.4.13.2

Reordena los factores de $3 \sin (x) \cos (x)$ .

$6 \cos (x) \sin (x) + 3 + 3 \cos (x) \sin (x) - 3 \cos^{2} (x) - 3 \sin^{2} (x) + 3 \cos (x) \sin (x)$

Paso 10.4.13.3

Suma $3 \cos (x) \sin (x)$ y $3 \cos (x) \sin (x)$ .

$6 \cos (x) \sin (x) + 3 + 6 \cos (x) \sin (x) - 3 \cos^{2} (x) - 3 \sin^{2} (x)$

Paso 10.4.14

Factoriza $- 3$ de $- 3 \cos^{2} (x)$ .

$6 \cos (x) \sin (x) + 3 + 6 \cos (x) \sin (x) - 3 (\cos^{2} (x)) - 3 \sin^{2} (x)$

Paso 10.4.15

Factoriza $- 3$ de $- 3 \sin^{2} (x)$ .

$6 \cos (x) \sin (x) + 3 + 6 \cos (x) \sin (x) - 3 (\cos^{2} (x)) - 3 (\sin^{2} (x))$

Paso 10.4.16

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

$6 \cos (x) \sin (x) + 3 + 6 \cos (x) \sin (x) - 3 (\cos^{2} (x) + \sin^{2} (x))$

Paso 10.4.17

Reorganiza los términos.

$6 \cos (x) \sin (x) + 3 + 6 \cos (x) \sin (x) - 3 (\sin^{2} (x) + \cos^{2} (x))$

Paso 10.4.18

Aplica la identidad pitagórica.

$6 \cos (x) \sin (x) + 3 + 6 \cos (x) \sin (x) - 3 \cdot 1$

Paso 10.4.19

Multiplica $- 3$ por $1$ .

$6 \cos (x) \sin (x) + 3 + 6 \cos (x) \sin (x) - 3$

Paso 10.5

Combina los términos opuestos en $6 \cos (x) \sin (x) + 3 + 6 \cos (x) \sin (x) - 3$ .

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Paso 10.5.1

Resta $3$ de $3$ .

$6 \cos (x) \sin (x) + 6 \cos (x) \sin (x) + 0$

Paso 10.5.2

Suma $6 \cos (x) \sin (x) + 6 \cos (x) \sin (x)$ y $0$ .

$6 \cos (x) \sin (x) + 6 \cos (x) \sin (x)$

Paso 10.6

Suma $6 \cos (x) \sin (x)$ y $6 \cos (x) \sin (x)$ .

$12 \cos (x) \sin (x)$