Axel Vogt schrieb: > > On 20.04.2013 18:16, email@example.com wrote: > ... > > INT(x/SQRT(a^4-x^4),x)=1/2*ASIN(x^2/a^2) > > Is that sure? For a= exp(I*Pi/4) and after differentiating > w.r.t. x that seems false to me by a factor of -1
Thanks. You are right: I forgot to declare 'a' complex when checking by differentiation. I will repair this tomorrow.