Question

Evaluate the Indefinite Integral

Answer 1

\[\int\limits \frac{7 x + 7}{x^2 + 1} dx\]

Answer 2

I've tried:
u = x+1
u = x^2 + 1
u = x^2
and nothing seems to be breaking this thing up, what am i missing?

Answer 3

call batman

Answer 4

Split the fraction
So if (a + b)/c then a/c + b/c

Answer 5

So by that rule, what can the integral become?