TUT0402 question

[shangluy]

Solve $\frac{xdx}{(x^2 + y^2)^\frac{3}{2}}$

[Victor Ivrii]

1) This integral is calculated by a trivial substitution $u=x^2+y^2$ (remember, $y$ is constant here)

2) \[ \] and \( \) are not math delimiters on this forum (use single or double dollars) since they interfere with the forum's markdown language