ln make me feel stu...

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March 1st 2008, 04:37 PM
eniav

ln make me feel stu...

Find the derivative:
y = 5^(7x)
March 1st 2008, 04:40 PM
bobak

$y = 5^{7x}$

$\ln y = 7x \ln 5$

$\frac{1}{y} \frac{dy}{dx} = 7 \ln 5$

$\frac{dy}{dx} = 7 \ln 5 \ y$

$\frac{dy}{dx} = 7 \ln 5 \ 5^{7x}$

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