> > > fracintegral(x,1/2) >> > >> > 4/15*x^(5/2)/sqrt(pi) >>> >>> > Though you should get a deprecation error.
> But when I try it on exponentials or trigonometric functions, I get the > following weird error. > > > fracintegral(sin(x),1/2) >> > >> > I can't reproduce this. > But if I type in > >> integrate((x-t)^(1/2)*sin(t),t) > > > it seems to work, but with a really weird result (expintegral_e?) > >> -1/2*sqrt(t - x)*(((expintegral_e(-1/2, -I*t + I*x) + >>> expintegral_e(-1/2, I*t - I*x))*t - (expintegral_e(-1/2, -I*t + I*x) + >>> expintegral_e(-1/2, I*t - I*x))*x)*sin(x) - ((-I*expintegral_e(-1/2, >>> -I*t + I*x) + I*expintegral_e(-1/2, I*t - I*x))*x + >>> (I*expintegral_e(-1/2, -I*t + I*x) - I*expintegral_e(-1/2, I*t - >>> I*x))*t)*cos(x)) >>> >>> > See http://trac.sagemath.org/sage_trac/ticket/11143. This is The generalized complex exponential integral `E_n(z)` We just need to finish a few things on this, but you are welcome to use it now. -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
