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Test

Edit detail for Test revision 11 of 16

changed:
-integrate((x^2-1)*atan(a*x),x)
integrate(atan(a^2*(x^2-1)*sec(a*x)),x)

fricas

integrate(atan(a^2*(x^2-1)*sec(a*x)),x)

$\label{eq1}\int^{ \displaystyle x}{{\arctan \left({{\left({{\%A}^{2}}- 1 \right)}\ {{a}^{2}}\ {\sec \left({\%A \ a}\right)}}\right)}\ {d \%A}}$

Type: Union(Expression(Integer),...)