Da li je tacan Integral?

Code:

(%i5) integrate(x/(sqrt(a^2-x^2)),x);
                                        2    2
(%o5)                           - sqrt(a  - x )

Code:

(%i6) integrate((sqrt(a^2-x^2)/(x^2)),x);
Is  a  zero or nonzero?

nonzero;
                                               2    2
                                 x       sqrt(a  - x )
(%o6)                   - asin(------) - -------------
                               abs(a)          x
(%i7)