- #1
Nano
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Indefinite Integral(arctan(x/2) / (x^2 + 4) )dx
(sorry, I can't get my word equation editor to paste it here)
I have stared at this problem for a while, but I can't figure it out. I made the triangle that has tan = x/2, and that triangle has a hypotenuse of sqrt(4 + x^2). But that doesn't seem to get me anywhere. Also, I thought using a u-substitution by u = arctan(x/2) would work, because it would get rid of the arctan, but that's not leading me anywhere either.
Could someone point me in the right direction?
(sorry, I can't get my word equation editor to paste it here)
I have stared at this problem for a while, but I can't figure it out. I made the triangle that has tan = x/2, and that triangle has a hypotenuse of sqrt(4 + x^2). But that doesn't seem to get me anywhere. Also, I thought using a u-substitution by u = arctan(x/2) would work, because it would get rid of the arctan, but that's not leading me anywhere either.
Could someone point me in the right direction?