How to find the antiderivative of this?

kindlychung · 发表于 2010-9-28 21:59

[这个贴子最后由kindlychung在 2010/09/28 10:03pm 第 3 次编辑]

$\\int \\frac{dy}{(x^2+y^2)^{3/2}}$
I know how to solve this one by substitution:

But without y in the numerator, it puzzles me.

elimqiu · 发表于 2010-9-28 23:06

Using something like
y/x = tan s

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How to find the antiderivative of this?

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How to find the antiderivative of this?