Resolver: e^2x-8e^x=0.... Pergunta de ideia deHardy

April 2020 1 49 Report

Resolver: e^2x-8e^x=0

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$e^{2x}-8e^x=0 \\
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(e^x)^2-8e^x=0 \\
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Substitua: \ y=e^x \\
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y^2-8y=0 \\
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y(y-8)=0 \\
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y=0 \\
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y=2\sqrt2 \\
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retornando \ variavel \ x: \\
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e^x=0 \rightarrow \ \ \ sem \ solucao \\
\\
\boxed{e^x=2\sqrt2 \rightarrow x=\frac{3ln2}{2}}$

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Como resolver: (4-x^2) Ln(2x^2+x)=0

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Hardy April 2020 | 0 Respostas

Resolver: (Lnx)^2-Ln(1/x)=6

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Como resolver: (4-x^2) Ln(2x^2+x)=0

Resolver: (Lnx)^2-Ln(1/x)=6

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