Bug introduced in 10.1 and fixed in 10.2
Many integrals no longer evaluate in V 10.1 when they did in 10.0.2
Here are some 23 integrals as an example, that all produced results in V 10.0.2, but now all returns unevaluated!
I am hoping there is some explanation to this which is common to all of them as many of them produced results (in 10.0.2) that involved Hypergeometric2F
, but number of other integrals produced result which did not involve special functions.
That is why I think it is strange that so many no longer evaluate in 10.1, and so I think there is some one common issue they share, and hoping someone can shed some light on why these integrals do not evaluate any more.
I will list the integrals in source code first, then below that will put screen shot of results to compare in later edit.
Clear[d, e, x, f, m, p, c, n, A, B]
Integrate[Sqrt[d + e*x + f*Sqrt[a + (e^2*x^2)/f^2]], x]
Integrate[1/Sqrt[d + e*x + f*Sqrt[a + (e^2*x^2)/f^2]], x]
Integrate[
Sqrt[a*x^2 + b*x*Sqrt[-(a/b^2) + (a^2*x^2)/b^2]]/(x*
Sqrt[-(a/b^2) + (a^2*x^2)/b^2]), x]
Integrate[
Sqrt[(-a)*x^2 + b*x*Sqrt[a/b^2 + (a^2*x^2)/b^2]]/(x*
Sqrt[a/b^2 + (a^2*x^2)/b^2]), x]
Integrate[
Sqrt[x*(a*x + b*Sqrt[-(a/b^2) + (a^2*x^2)/b^2])]/(x*
Sqrt[-(a/b^2) + (a^2*x^2)/b^2]), x]
Integrate[
Sqrt[x*(a*x + b*Sqrt[-(a/b^2) + (a^2*x^2)/b^2])]/(x*
Sqrt[-(a/b^2) + (a^2*x^2)/b^2]), x]
Integrate[
Sqrt[x*((-a)*x + b*Sqrt[a/b^2 + (a^2*x^2)/b^2])]/(x*
Sqrt[a/b^2 + (a^2*x^2)/b^2]), x]
Integrate[x^m Sqrt[b - a/x]/Sqrt[a - b x], x]
Integrate[(a + b Sqrt[c + d x])^p /x, x]
Integrate[x^(23/2)/Sqrt[a + b*x^5], x]
Integrate[x^(13/2)/Sqrt[a + b*x^5], x]
Integrate[x^(3/2)/Sqrt[a + b*x^5], x]
Integrate[x^(23/2)/Sqrt[1 + x^5], x]
Integrate[x^(13/2)/Sqrt[1 + x^5], x]
Integrate[x^(3/2)/Sqrt[1 + x^5], x]
Integrate[(x^4*(e + f*x)^n)/(a + b*x^2), x]
Integrate[(x^3*(e + f*x)^n)/(a + b*x^2), x]
Integrate[(x^2*(e + f*x)^n)/(a + b*x^2), x]
Integrate[(x*(e + f*x)^n)/(a + b*x^2), x]
Integrate[(e + f*x)^n/(a + b*x^2), x]
Integrate[(e + f*x)^n/(x*(a + b*x^2)), x]
Integrate[(e + f*x)^n/(x^2*(a + b*x^2)), x]
Integrate[(A + B*x)*((d + e*x)^m/(a + c*x^2)), x]
Integrate[x^m/(a + b*x^2 + c*x^4), x]
Again, all of the above fail to produce results in V 10.1, windows 7. But they all produce results in 10.0.2.
Will post screen shots below.