Question

Find f ''(1) given integral...

Answer 1

i don't know how to do it with a calculator

Answer 2

\[f(x)= \int\limits_{1}^{x} (t^2)/(((e^t)+1)(sint))dt\]

Answer 3

use the fundamental theorem of calculus

Answer 4

f'(t)=t^2/((e^t+1)sin(t))

Answer 5

take the derivative again...plug in 1

Answer 6

got it. thanks!