Derivative of f(x)=7^(2x)
(2 ln7) 7^(2x)
f(x)=7^(2x) as 7 = e^(ln(7)) f(x) = (e^(ln(7)))^(2x) f(x) = e^(2*ln(7)*x) f '(x) = 2*ln(7)*e^(2*ln(7)*x) f '(x) = 2*ln(7)*7^(2x)
7 = e^(ln(7)) substitute in f(x) = [e^(ln(7))]^(2x) = e^[2x * ln(7)] can you take it from there?