Opened 4 years ago

#18006 new defect

failure with solution of trivial exponential equations

Reported by: rws Owned by:
Priority: major Milestone: sage-6.6
Component: calculus Keywords:
Cc: Merged in:
Authors: Reviewers:
Report Upstream: N/A Work issues:
Branch: Commit:
Dependencies: Stopgaps:

Description

From http://ask.sagemath.org/question/26237/why-can-sage-solve-one-log-equation-but-not-another-with-only-different-values/

sage: solve(3 == 586 * (1/5) ^ x, x)
[x == log(586/3)/log(5)]

but:

sage: solve(3 == 586 * (99557/100000) ^ x, x)
[100000^x == 586/3*99557^x]

A solution:
log(3/586) / log(0.99557) = 1188.03958878842

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