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PLEASE HELP!!!! AND TEACH ME How TO DO IT.

My question is this.

use the substitution x=2tan(y)

(37dx)/(x^2*sqrt(x^2+4))

give the answer in terms of y.

I did the substition, but it looked more complicated.

It doesn't look like a u*du thing, but it does look like some arcsin thing... i couldn't figure it out. The x^2 is bugging me.

PLease help!!!