Opened 3 years ago
Last modified 5 months ago
#24428 needs_work defect
Substitution should be the same as numerical evaluation — at Initial Version
| Reported by: | jdemeyer | Owned by: | |
|---|---|---|---|
| Priority: | major | Milestone: | sage-8.2 |
| Component: | symbolics | Keywords: | |
| Cc: | rws, slelievre | Merged in: | |
| Authors: | Reviewers: | ||
| Report Upstream: | N/A | Work issues: | |
| Branch: | Commit: | ||
| Dependencies: | Stopgaps: |
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Description
It is very surprising that these do not give the same result:
sage: arccosh(0.9) NaN
and
sage: arccosh(x).subs(x=0.9) 0.451026811796262*I
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