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OpenStudy (anonymous):
Find critical number function of f(x)=(7x-4)e^(-6x)
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OpenStudy (anonymous):
\[f'(x) = -6(7x-4)e ^{-6x} + 7(7x-4)e ^{-6x}\]
OpenStudy (anonymous):
I used product rule
OpenStudy (anonymous):
whats next step?
OpenStudy (anonymous):
set it equal to 0 and solve for x
OpenStudy (anonymous):
how do you that specifically?
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OpenStudy (anonymous):
dont worry i got the answer. the way you did was wrong btw
OpenStudy (anonymous):
what was wrong?
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