Question

http://online.math.uh.edu/apcalculus/exams/images/AP_AB_version1__37.gif

Answer 1

@mathmate

Answer 2

i did this with u substituion it did not work

Answer 3

i am getting something like ln2/2

Answer 4

It looks to me more an atan(2x)

Answer 5

how

Answer 6

i took u=1+4t^2

Answer 7

du/8t=dt

Answer 8

The standard integral is
\( \int \frac{dx}{1+x^2} = atan(x) + C \)