Question

Find critical number
function of f(x)=(7x-4)e^(-6x)

Answer 1

\[f'(x) = -6(7x-4)e ^{-6x} + 7(7x-4)e ^{-6x}\]

Answer 2

I used product rule

Answer 3

whats next step?

Answer 4

set it equal to 0 and solve for x

Answer 5

how do you that specifically?

Answer 6

dont worry i got the answer. the way you did was wrong btw

Answer 7

what was wrong?