quad_qags can do numerical (definite) integral,
but integrate returns an error:
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Maxima 5.25.1 http://maxima.sourceforge.net
using Lisp GNU Common Lisp (GCL) GCL 2.6.8 (a.k.a. GCL)
(%i1) fpprintprec:8$
(%i2) quad_qags (
quad_qags (1+sin(5*x*y+y^2), y, -sqrt(1-x^2), sqrt(1-x^2))[1],
x, -1, 1);
(%o2) [3.4367789,1.51120227E-9,399,0]
(%i3) integrate (
integrate (1+sin(5*x*y+y^2), y, -sqrt(1-x^2), sqrt(1-x^2)),
x, -1, 1);
defint: lower limit of integration must be real; found -sqrt(1-x^2)
-- an error. To debug this try: debugmode(true);
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Is this a bug?
Ted Woollett