- #1

fiziksfun

- 78

- 0

## Homework Statement

how do i integrate

v^2 / v^2 + 4

## Homework Equations

i understand this has something to do with arctan

but if i use u substitution to let v=(u/2) so (on the bottom) it becomes (1/4)(1+(v/2)^2)

there's still a v^2 on the top which the u substitution does not get rid of. Help :[