doctest fix for: Re/Im(tanh) wrong formula
Reported by: 
rws 
Owned by: 

Priority:

major

Milestone:

sage7.1

Component:

symbolics

Keywords:


Cc:

behackl

Merged in:


Authors:

Ralf Stephan

Reviewers:

Marc Mezzarobba

Report Upstream:

N/A

Work issues:


Branch:

9eafdee (Commits, GitHub, GitLab) 
Commit:

9eafdee72e2d440a0ae9f7b47125a867a1524960

Dependencies:


Stopgaps:


In analogy to #19791:
sage: tanh(1+2*I).n()
1.16673625724092  0.243458201185725*I
sage: tanh(1+2*I).real().n()
0.202053272732553
sage: tanh(1+2*I).imag().n()
0.579697798322816
sage: tanh(x).real()
tanh(real_part(x))/(tan(imag_part(x))^2*tanh(real_part(x))^2 + 1)
sage: tanh(x).imag()
tan(imag_part(x))/(tan(imag_part(x))^2*tanh(real_part(x))^2 + 1)
See for example http://dlmf.nist.gov/4.35.E36
Will be fixed in Pynac0.6.3 and should be doctested here.
Change History (6)
Description: 
modified (diff)

Branch: 
→ u/rws/re_im_tanh__wrong_formula

Authors: 
→ Ralf Stephan

Commit: 
→ 9eafdee72e2d440a0ae9f7b47125a867a1524960

Status: 
new →
needs_review

Summary: 
Re/Im(tanh) wrong formula →
doctest fix for: Re/Im(tanh) wrong formula

Reviewers: 
→ Marc Mezzarobba

Status: 
needs_review →
positive_review

Branch: 
u/rws/re_im_tanh__wrong_formula →
9eafdee72e2d440a0ae9f7b47125a867a1524960

Resolution: 
→ fixed

Status: 
positive_review →
closed

New commits:
20098: doctest fix for Re/Im(tanh) wrong formula