Could i be shown this integration by parts step by step

nowayjose
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Homework Statement


αh=α-ε+ih

ΔαH/Δα= dαH/dα = d/dα x (α-ε+ih) = 1-(dε/dα)
 
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I don't see any integration. I see only differentiation.
 
What differentiation do you see? it would be great if you could write what you see so that i can see it as well.
 
nowayjose said:
What differentiation do you see? it would be great if you could write what you see so that i can see it as well.

He see's what you've written. I see it the same way.

dαH/dα = d/dα x (α-ε+ih) = 1-(dε/dα)
 
nowayjose said:
What differentiation do you see? it would be great if you could write what you see so that i can see it as well.
It would be even greater if you could write out the complete problem you are trying to solve.

As voko has stated, there is no integration mention in your Original Post.
 

Thread 'Finding the nth roots of a complex number'

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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