Álgebra linear Exemplos

$[\begin{array}{c} \frac{1}{\sqrt{17}} & - \frac{4}{\sqrt{17}} \end{array}] [\begin{array}{c} \frac{1}{\sqrt{17}} \\ - \frac{4}{\sqrt{17}} \end{array}]$

Etapa 1

Multiplique $\frac{1}{\sqrt{17}}$ por $\frac{\sqrt{17}}{\sqrt{17}}$ .

$[\begin{array}{c} \frac{1}{\sqrt{17}} \cdot \frac{\sqrt{17}}{\sqrt{17}} & - \frac{4}{\sqrt{17}} \end{array}] [\begin{array}{c} \frac{1}{\sqrt{17}} \\ - \frac{4}{\sqrt{17}} \end{array}]$

Etapa 2

Combine e simplifique o denominador.

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Etapa 2.1

Multiplique $\frac{1}{\sqrt{17}}$ por $\frac{\sqrt{17}}{\sqrt{17}}$ .

$[\begin{array}{c} \frac{\sqrt{17}}{\sqrt{17} \sqrt{17}} & - \frac{4}{\sqrt{17}} \end{array}] [\begin{array}{c} \frac{1}{\sqrt{17}} \\ - \frac{4}{\sqrt{17}} \end{array}]$

Etapa 2.2

Eleve $\sqrt{17}$ à potência de $1$ .

$[\begin{array}{c} \frac{\sqrt{17}}{{\sqrt{17}}^{1} \sqrt{17}} & - \frac{4}{\sqrt{17}} \end{array}] [\begin{array}{c} \frac{1}{\sqrt{17}} \\ - \frac{4}{\sqrt{17}} \end{array}]$

Etapa 2.3

Eleve $\sqrt{17}$ à potência de $1$ .

$[\begin{array}{c} \frac{\sqrt{17}}{{\sqrt{17}}^{1} {\sqrt{17}}^{1}} & - \frac{4}{\sqrt{17}} \end{array}] [\begin{array}{c} \frac{1}{\sqrt{17}} \\ - \frac{4}{\sqrt{17}} \end{array}]$

Etapa 2.4

Use a regra da multiplicação de potências $a^{m} a^{n} = a^{m + n}$ para combinar expoentes.

$[\begin{array}{c} \frac{\sqrt{17}}{{\sqrt{17}}^{1 + 1}} & - \frac{4}{\sqrt{17}} \end{array}] [\begin{array}{c} \frac{1}{\sqrt{17}} \\ - \frac{4}{\sqrt{17}} \end{array}]$

Etapa 2.5

Some $1$ e $1$ .

$[\begin{array}{c} \frac{\sqrt{17}}{{\sqrt{17}}^{2}} & - \frac{4}{\sqrt{17}} \end{array}] [\begin{array}{c} \frac{1}{\sqrt{17}} \\ - \frac{4}{\sqrt{17}} \end{array}]$

Etapa 2.6

Reescreva ${\sqrt{17}}^{2}$ como $17$ .

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Etapa 2.6.1

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ para reescrever $\sqrt{17}$ como $17^{\frac{1}{2}}$ .

$[\begin{array}{c} \frac{\sqrt{17}}{{(17^{\frac{1}{2}})}^{2}} & - \frac{4}{\sqrt{17}} \end{array}] [\begin{array}{c} \frac{1}{\sqrt{17}} \\ - \frac{4}{\sqrt{17}} \end{array}]$

Etapa 2.6.2

Aplique a regra da multiplicação de potências e multiplique os expoentes, ${(a^{m})}^{n} = a^{m n}$ .

$[\begin{array}{c} \frac{\sqrt{17}}{17^{\frac{1}{2} \cdot 2}} & - \frac{4}{\sqrt{17}} \end{array}] [\begin{array}{c} \frac{1}{\sqrt{17}} \\ - \frac{4}{\sqrt{17}} \end{array}]$

Etapa 2.6.3

Combine $\frac{1}{2}$ e $2$ .

$[\begin{array}{c} \frac{\sqrt{17}}{17^{\frac{2}{2}}} & - \frac{4}{\sqrt{17}} \end{array}] [\begin{array}{c} \frac{1}{\sqrt{17}} \\ - \frac{4}{\sqrt{17}} \end{array}]$

Etapa 2.6.4

Cancele o fator comum de $2$ .

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Etapa 2.6.4.1

Cancele o fator comum.

$[\begin{array}{c} \frac{\sqrt{17}}{17^{\frac{2}{2}}} & - \frac{4}{\sqrt{17}} \end{array}] [\begin{array}{c} \frac{1}{\sqrt{17}} \\ - \frac{4}{\sqrt{17}} \end{array}]$

Etapa 2.6.4.2

Reescreva a expressão.

$[\begin{array}{c} \frac{\sqrt{17}}{17^{1}} & - \frac{4}{\sqrt{17}} \end{array}] [\begin{array}{c} \frac{1}{\sqrt{17}} \\ - \frac{4}{\sqrt{17}} \end{array}]$

Etapa 2.6.5

Avalie o expoente.

$[\begin{array}{c} \frac{\sqrt{17}}{17} & - \frac{4}{\sqrt{17}} \end{array}] [\begin{array}{c} \frac{1}{\sqrt{17}} \\ - \frac{4}{\sqrt{17}} \end{array}]$

Etapa 3

Multiplique $\frac{4}{\sqrt{17}}$ por $\frac{\sqrt{17}}{\sqrt{17}}$ .

$[\begin{array}{c} \frac{\sqrt{17}}{17} & - (\frac{4}{\sqrt{17}} \cdot \frac{\sqrt{17}}{\sqrt{17}}) \end{array}] [\begin{array}{c} \frac{1}{\sqrt{17}} \\ - \frac{4}{\sqrt{17}} \end{array}]$

Etapa 4

Combine e simplifique o denominador.

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Etapa 4.1

Multiplique $\frac{4}{\sqrt{17}}$ por $\frac{\sqrt{17}}{\sqrt{17}}$ .

$[\begin{array}{c} \frac{\sqrt{17}}{17} & - \frac{4 \sqrt{17}}{\sqrt{17} \sqrt{17}} \end{array}] [\begin{array}{c} \frac{1}{\sqrt{17}} \\ - \frac{4}{\sqrt{17}} \end{array}]$

Etapa 4.2

Eleve $\sqrt{17}$ à potência de $1$ .

$[\begin{array}{c} \frac{\sqrt{17}}{17} & - \frac{4 \sqrt{17}}{{\sqrt{17}}^{1} \sqrt{17}} \end{array}] [\begin{array}{c} \frac{1}{\sqrt{17}} \\ - \frac{4}{\sqrt{17}} \end{array}]$

Etapa 4.3

Eleve $\sqrt{17}$ à potência de $1$ .

$[\begin{array}{c} \frac{\sqrt{17}}{17} & - \frac{4 \sqrt{17}}{{\sqrt{17}}^{1} {\sqrt{17}}^{1}} \end{array}] [\begin{array}{c} \frac{1}{\sqrt{17}} \\ - \frac{4}{\sqrt{17}} \end{array}]$

Etapa 4.4

Use a regra da multiplicação de potências $a^{m} a^{n} = a^{m + n}$ para combinar expoentes.

$[\begin{array}{c} \frac{\sqrt{17}}{17} & - \frac{4 \sqrt{17}}{{\sqrt{17}}^{1 + 1}} \end{array}] [\begin{array}{c} \frac{1}{\sqrt{17}} \\ - \frac{4}{\sqrt{17}} \end{array}]$

Etapa 4.5

Some $1$ e $1$ .

$[\begin{array}{c} \frac{\sqrt{17}}{17} & - \frac{4 \sqrt{17}}{{\sqrt{17}}^{2}} \end{array}] [\begin{array}{c} \frac{1}{\sqrt{17}} \\ - \frac{4}{\sqrt{17}} \end{array}]$

Etapa 4.6

Reescreva ${\sqrt{17}}^{2}$ como $17$ .

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Etapa 4.6.1

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ para reescrever $\sqrt{17}$ como $17^{\frac{1}{2}}$ .

$[\begin{array}{c} \frac{\sqrt{17}}{17} & - \frac{4 \sqrt{17}}{{(17^{\frac{1}{2}})}^{2}} \end{array}] [\begin{array}{c} \frac{1}{\sqrt{17}} \\ - \frac{4}{\sqrt{17}} \end{array}]$

Etapa 4.6.2

Aplique a regra da multiplicação de potências e multiplique os expoentes, ${(a^{m})}^{n} = a^{m n}$ .

$[\begin{array}{c} \frac{\sqrt{17}}{17} & - \frac{4 \sqrt{17}}{17^{\frac{1}{2} \cdot 2}} \end{array}] [\begin{array}{c} \frac{1}{\sqrt{17}} \\ - \frac{4}{\sqrt{17}} \end{array}]$

Etapa 4.6.3

Combine $\frac{1}{2}$ e $2$ .

$[\begin{array}{c} \frac{\sqrt{17}}{17} & - \frac{4 \sqrt{17}}{17^{\frac{2}{2}}} \end{array}] [\begin{array}{c} \frac{1}{\sqrt{17}} \\ - \frac{4}{\sqrt{17}} \end{array}]$

Etapa 4.6.4

Cancele o fator comum de $2$ .

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Etapa 4.6.4.1

Cancele o fator comum.

$[\begin{array}{c} \frac{\sqrt{17}}{17} & - \frac{4 \sqrt{17}}{17^{\frac{2}{2}}} \end{array}] [\begin{array}{c} \frac{1}{\sqrt{17}} \\ - \frac{4}{\sqrt{17}} \end{array}]$

Etapa 4.6.4.2

Reescreva a expressão.

$[\begin{array}{c} \frac{\sqrt{17}}{17} & - \frac{4 \sqrt{17}}{17^{1}} \end{array}] [\begin{array}{c} \frac{1}{\sqrt{17}} \\ - \frac{4}{\sqrt{17}} \end{array}]$

Etapa 4.6.5

Avalie o expoente.

$[\begin{array}{c} \frac{\sqrt{17}}{17} & - \frac{4 \sqrt{17}}{17} \end{array}] [\begin{array}{c} \frac{1}{\sqrt{17}} \\ - \frac{4}{\sqrt{17}} \end{array}]$

Etapa 5

Multiplique $\frac{1}{\sqrt{17}}$ por $\frac{\sqrt{17}}{\sqrt{17}}$ .

$[\begin{array}{c} \frac{\sqrt{17}}{17} & - \frac{4 \sqrt{17}}{17} \end{array}] [\begin{array}{c} \frac{1}{\sqrt{17}} \cdot \frac{\sqrt{17}}{\sqrt{17}} \\ - \frac{4}{\sqrt{17}} \end{array}]$

Etapa 6

Combine e simplifique o denominador.

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Etapa 6.1

Multiplique $\frac{1}{\sqrt{17}}$ por $\frac{\sqrt{17}}{\sqrt{17}}$ .

$[\begin{array}{c} \frac{\sqrt{17}}{17} & - \frac{4 \sqrt{17}}{17} \end{array}] [\begin{array}{c} \frac{\sqrt{17}}{\sqrt{17} \sqrt{17}} \\ - \frac{4}{\sqrt{17}} \end{array}]$

Etapa 6.2

Eleve $\sqrt{17}$ à potência de $1$ .

$[\begin{array}{c} \frac{\sqrt{17}}{17} & - \frac{4 \sqrt{17}}{17} \end{array}] [\begin{array}{c} \frac{\sqrt{17}}{{\sqrt{17}}^{1} \sqrt{17}} \\ - \frac{4}{\sqrt{17}} \end{array}]$

Etapa 6.3

Eleve $\sqrt{17}$ à potência de $1$ .

$[\begin{array}{c} \frac{\sqrt{17}}{17} & - \frac{4 \sqrt{17}}{17} \end{array}] [\begin{array}{c} \frac{\sqrt{17}}{{\sqrt{17}}^{1} {\sqrt{17}}^{1}} \\ - \frac{4}{\sqrt{17}} \end{array}]$

Etapa 6.4

Use a regra da multiplicação de potências $a^{m} a^{n} = a^{m + n}$ para combinar expoentes.

$[\begin{array}{c} \frac{\sqrt{17}}{17} & - \frac{4 \sqrt{17}}{17} \end{array}] [\begin{array}{c} \frac{\sqrt{17}}{{\sqrt{17}}^{1 + 1}} \\ - \frac{4}{\sqrt{17}} \end{array}]$

Etapa 6.5

Some $1$ e $1$ .

$[\begin{array}{c} \frac{\sqrt{17}}{17} & - \frac{4 \sqrt{17}}{17} \end{array}] [\begin{array}{c} \frac{\sqrt{17}}{{\sqrt{17}}^{2}} \\ - \frac{4}{\sqrt{17}} \end{array}]$

Etapa 6.6

Reescreva ${\sqrt{17}}^{2}$ como $17$ .

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Etapa 6.6.1

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ para reescrever $\sqrt{17}$ como $17^{\frac{1}{2}}$ .

$[\begin{array}{c} \frac{\sqrt{17}}{17} & - \frac{4 \sqrt{17}}{17} \end{array}] [\begin{array}{c} \frac{\sqrt{17}}{{(17^{\frac{1}{2}})}^{2}} \\ - \frac{4}{\sqrt{17}} \end{array}]$

Etapa 6.6.2

Aplique a regra da multiplicação de potências e multiplique os expoentes, ${(a^{m})}^{n} = a^{m n}$ .

$[\begin{array}{c} \frac{\sqrt{17}}{17} & - \frac{4 \sqrt{17}}{17} \end{array}] [\begin{array}{c} \frac{\sqrt{17}}{17^{\frac{1}{2} \cdot 2}} \\ - \frac{4}{\sqrt{17}} \end{array}]$

Etapa 6.6.3

Combine $\frac{1}{2}$ e $2$ .

$[\begin{array}{c} \frac{\sqrt{17}}{17} & - \frac{4 \sqrt{17}}{17} \end{array}] [\begin{array}{c} \frac{\sqrt{17}}{17^{\frac{2}{2}}} \\ - \frac{4}{\sqrt{17}} \end{array}]$

Etapa 6.6.4

Cancele o fator comum de $2$ .

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Etapa 6.6.4.1

Cancele o fator comum.

$[\begin{array}{c} \frac{\sqrt{17}}{17} & - \frac{4 \sqrt{17}}{17} \end{array}] [\begin{array}{c} \frac{\sqrt{17}}{17^{\frac{2}{2}}} \\ - \frac{4}{\sqrt{17}} \end{array}]$

Etapa 6.6.4.2

Reescreva a expressão.

$[\begin{array}{c} \frac{\sqrt{17}}{17} & - \frac{4 \sqrt{17}}{17} \end{array}] [\begin{array}{c} \frac{\sqrt{17}}{17^{1}} \\ - \frac{4}{\sqrt{17}} \end{array}]$

Etapa 6.6.5

Avalie o expoente.

$[\begin{array}{c} \frac{\sqrt{17}}{17} & - \frac{4 \sqrt{17}}{17} \end{array}] [\begin{array}{c} \frac{\sqrt{17}}{17} \\ - \frac{4}{\sqrt{17}} \end{array}]$

Etapa 7

Multiplique $\frac{4}{\sqrt{17}}$ por $\frac{\sqrt{17}}{\sqrt{17}}$ .

$[\begin{array}{c} \frac{\sqrt{17}}{17} & - \frac{4 \sqrt{17}}{17} \end{array}] [\begin{array}{c} \frac{\sqrt{17}}{17} \\ - (\frac{4}{\sqrt{17}} \cdot \frac{\sqrt{17}}{\sqrt{17}}) \end{array}]$

Etapa 8

Combine e simplifique o denominador.

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Etapa 8.1

Multiplique $\frac{4}{\sqrt{17}}$ por $\frac{\sqrt{17}}{\sqrt{17}}$ .

$[\begin{array}{c} \frac{\sqrt{17}}{17} & - \frac{4 \sqrt{17}}{17} \end{array}] [\begin{array}{c} \frac{\sqrt{17}}{17} \\ - \frac{4 \sqrt{17}}{\sqrt{17} \sqrt{17}} \end{array}]$

Etapa 8.2

Eleve $\sqrt{17}$ à potência de $1$ .

$[\begin{array}{c} \frac{\sqrt{17}}{17} & - \frac{4 \sqrt{17}}{17} \end{array}] [\begin{array}{c} \frac{\sqrt{17}}{17} \\ - \frac{4 \sqrt{17}}{{\sqrt{17}}^{1} \sqrt{17}} \end{array}]$

Etapa 8.3

Eleve $\sqrt{17}$ à potência de $1$ .

$[\begin{array}{c} \frac{\sqrt{17}}{17} & - \frac{4 \sqrt{17}}{17} \end{array}] [\begin{array}{c} \frac{\sqrt{17}}{17} \\ - \frac{4 \sqrt{17}}{{\sqrt{17}}^{1} {\sqrt{17}}^{1}} \end{array}]$

Etapa 8.4

Use a regra da multiplicação de potências $a^{m} a^{n} = a^{m + n}$ para combinar expoentes.

$[\begin{array}{c} \frac{\sqrt{17}}{17} & - \frac{4 \sqrt{17}}{17} \end{array}] [\begin{array}{c} \frac{\sqrt{17}}{17} \\ - \frac{4 \sqrt{17}}{{\sqrt{17}}^{1 + 1}} \end{array}]$

Etapa 8.5

Some $1$ e $1$ .

$[\begin{array}{c} \frac{\sqrt{17}}{17} & - \frac{4 \sqrt{17}}{17} \end{array}] [\begin{array}{c} \frac{\sqrt{17}}{17} \\ - \frac{4 \sqrt{17}}{{\sqrt{17}}^{2}} \end{array}]$

Etapa 8.6

Reescreva ${\sqrt{17}}^{2}$ como $17$ .

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Etapa 8.6.1

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ para reescrever $\sqrt{17}$ como $17^{\frac{1}{2}}$ .

$[\begin{array}{c} \frac{\sqrt{17}}{17} & - \frac{4 \sqrt{17}}{17} \end{array}] [\begin{array}{c} \frac{\sqrt{17}}{17} \\ - \frac{4 \sqrt{17}}{{(17^{\frac{1}{2}})}^{2}} \end{array}]$

Etapa 8.6.2

Aplique a regra da multiplicação de potências e multiplique os expoentes, ${(a^{m})}^{n} = a^{m n}$ .

$[\begin{array}{c} \frac{\sqrt{17}}{17} & - \frac{4 \sqrt{17}}{17} \end{array}] [\begin{array}{c} \frac{\sqrt{17}}{17} \\ - \frac{4 \sqrt{17}}{17^{\frac{1}{2} \cdot 2}} \end{array}]$

Etapa 8.6.3

Combine $\frac{1}{2}$ e $2$ .

$[\begin{array}{c} \frac{\sqrt{17}}{17} & - \frac{4 \sqrt{17}}{17} \end{array}] [\begin{array}{c} \frac{\sqrt{17}}{17} \\ - \frac{4 \sqrt{17}}{17^{\frac{2}{2}}} \end{array}]$

Etapa 8.6.4

Cancele o fator comum de $2$ .

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Etapa 8.6.4.1

Cancele o fator comum.

$[\begin{array}{c} \frac{\sqrt{17}}{17} & - \frac{4 \sqrt{17}}{17} \end{array}] [\begin{array}{c} \frac{\sqrt{17}}{17} \\ - \frac{4 \sqrt{17}}{17^{\frac{2}{2}}} \end{array}]$

Etapa 8.6.4.2

Reescreva a expressão.

$[\begin{array}{c} \frac{\sqrt{17}}{17} & - \frac{4 \sqrt{17}}{17} \end{array}] [\begin{array}{c} \frac{\sqrt{17}}{17} \\ - \frac{4 \sqrt{17}}{17^{1}} \end{array}]$

Etapa 8.6.5

Avalie o expoente.

$[\begin{array}{c} \frac{\sqrt{17}}{17} & - \frac{4 \sqrt{17}}{17} \end{array}] [\begin{array}{c} \frac{\sqrt{17}}{17} \\ - \frac{4 \sqrt{17}}{17} \end{array}]$

Etapa 9

Multiplique $[\begin{array}{c} \frac{\sqrt{17}}{17} & - \frac{4 \sqrt{17}}{17} \end{array}] [\begin{array}{c} \frac{\sqrt{17}}{17} \\ - \frac{4 \sqrt{17}}{17} \end{array}]$ .

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Etapa 9.1

Two matrices can be multiplied if and only if the number of columns in the first matrix is equal to the number of rows in the second matrix. In this case, the first matrix is $1 \times 2$ and the second matrix is $2 \times 1$ .

Etapa 9.2

Multiplique cada linha na primeira matriz por cada coluna na segunda matriz.

$[\begin{array}{c} \frac{\sqrt{17}}{17} \cdot \frac{\sqrt{17}}{17} - \frac{4 \sqrt{17}}{17} (- \frac{4 \sqrt{17}}{17}) \end{array}]$

Etapa 9.3

Simplifique cada elemento da matriz multiplicando todas as expressões.

$[\begin{array}{c} 1 \end{array}]$