Question

How do you integrate from 1 to 2 ((x^2-1)/(x+1)). Please.

Answer 1

factor x^2 - 1
= (x+1)(x-1)
cancel stuff out and your left with this to integrate

\[\int\limits_{1}^{2} (x-1) dx\]

so the antiderivative is
x^2/2 - x
and now you substitute the limits in

(2)^2/2 - 2 - [(1)^2/2 -1]
0 - (1/2 - 1)
= 1/2

Answer 2

ohhhhhhhhhh..... I knew that (jk) thanks a lot

Answer 3

np glad to help