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Integration (change of variable)


Dear All

I have a function that to be integrated with respect to s , the
function is :

(2*E^(((-Sqrt[p] - V)*x)/2)*γ*DifferentialD[(p - V^2)/4])/(-Sqrt[p] -
V)

What i need to to do is actually change the varible s into p (before
the integratio) according to the relation

p=4*s+V^2;

How can i automatically do that (changing the variable) using
mathematica ? Remember that i have the term "ds" which i should take
care of when i make the change .

Any help in this regard will be highly appreciated

Many thanks in advance

HMQ


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