Opened 3 years ago

## #21057 new defect

# Assumption ignored in indefinite integral computation

Reported by: | rws | Owned by: | |
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Priority: | major | Milestone: | sage-7.3 |

Component: | calculus | Keywords: | |

Cc: | Merged in: | ||

Authors: | Reviewers: | ||

Report Upstream: | N/A | Work issues: | |

Branch: | Commit: | ||

Dependencies: | Stopgaps: |

### Description

sage: _=var("a b c d x") sage: forget() sage: assume(b*(a*d-b*c)>0) sage: 1/((a+b*x)*(c+d*x)^(1/3)) 1/((b*x + a)*(d*x + c)^(1/3)) sage: _.integrate(x) ValueError: Computation failed since Maxima requested additional constraints; using the 'assume' command before evaluation *may* help (example of legal syntax is 'assume(b*(a*d-b*c) >0)', see `assume?` for more details) Is b*(a*d-b*c) positive or negative?

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