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Questions tagged [version-13.1]

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11 votes
1 answer
334 views

IntegrateChangeVariables producing incorrect result

Bug introduced in 13.1. and persisting through 14.0 Consider the simple quadratic function: ClearAll[f]; f[x_]:=x^2; Now let's set up the two identical integrals: ...
user13892's user avatar
  • 9,751
14 votes
1 answer
302 views

The last syntax of `ParametricPlot3D` seems broken in V13.x

Bug introduced in 13.0 and have been fixed in 13.2.1 . It seems not to work properly to use ParametricPlot3D with parameters specified in a two-dimensional ...
Αλέξανδρος Ζεγγ's user avatar
7 votes
2 answers
145 views

Why does DSolve spit out Part::partw warning?

Bug introduced in 13.1. and fixed in V 13.2.1 Submitted to WRI. CASE ID [CASE:4975479]. I was looking at this question. In V 13.1 I get an internal error which the above question does not mention ...
Nasser's user avatar
  • 150k