Question

I need to know how that following integration could be solved ?

Answer 1

\[\int\limits_{l}^{0}dz/(Z^2+k) \]
where k is constant

Answer 2

Substitute Z/k^1/2=tan(t)

Answer 3

thank you very much :) I did

Answer 4

@Ehab.Hamdy did it work out fine?

Answer 5

actually no , actually the thing I wanted to calculate is the electric field due to a charged cylindrical conductor
\[\int\limits_{0}^{2\pi} \int\limits_{l}^{0} {\sigma a d phi dz /(4\Pi \xi R^2) }(a Ar +Z Az)\]
where a is the radius of the cylinder \[\sigma \] is the charge density of the cylindrical conductor
R is the distance between the charge element and the points around the cylinder
R= (a^2+Z^2)