Integrating Functions: Tips and Tutorials for Solving Complex Integrals

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Abdulwahab Hajar
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Homework Statement


Hello people
How would one integrate a function in the form of
∫ ydx/(x2 + y2)3/2

Homework Equations


I don't really know how to go about it

The Attempt at a Solution


I tried solving it by substitution but I can't find a suitable one...
any online tutorials for such an integral would be amazing!
Thank you
 
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Hello. What substitutions did you try ?
 
I tried anything with x but that won't work, I checked it online I believe I have to try x = ytanθ... right?
and would it be a double substitution because we have function that the denominator is to the power of 3/2
 
Abdulwahab Hajar said:
I tried anything with x but that won't work, I checked it online I believe I have to try x = ytanθ... right?
and would it be a double substitution because we have function that the denominator is to the power of 3/2

If you think you need to substitute ##x = y \tan(\theta)##, then just go ahead and try it for yourself to see what you get.
 
Thank you, I found a solution
all is good
 
There are two things I don't understand about this problem. First, when finding the nth root of a number, there should in theory be n solutions. However, the formula produces n+1 roots. Here is how. The first root is simply ##\left(r\right)^{\left(\frac{1}{n}\right)}##. Then you multiply this first root by n additional expressions given by the formula, as you go through k=0,1,...n-1. So you end up with n+1 roots, which cannot be correct. Let me illustrate what I mean. For this...
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