Primitive of Arctan x: Ideas & Solutions

[kidia]

Please any idea on this,find the primitive of arctan x

 

[Data]

Two ways: Make the substitution u=arctan x, or use integration by parts,

\int u \ dv = uv - \int v \ du

where dv=dx, u=arctan x (they really work out in the same way anyways).

 

[kidia]

Yah now I understand it will be the intergral of arctanxdx. thanx.