Status: Accepted Owner: asmeurer Labels: Type-Enhancement Priority-Medium Simplify
New issue 1590 by asmeurer: Reduce powers of sin's and cos's to multi-argument functions http://code.google.com/p/sympy/issues/detail?id=1590 I don't know what the name of such a function would be, but we need a way to apply the identities: sin(x)**2 => 1/2 - cos(2*x)/2 cos(x)**2 => 1/2 + cos(2*x)/2 There are also rules for combination of sins and cos, and higher powers. See http://en.wikipedia.org/wiki/Trig_identities#Power-reduction_formulas. Probably we should also have a way to go the other way too. -- You received this message because you are listed in the owner or CC fields of this issue, or because you starred this issue. You may adjust your issue notification preferences at: http://code.google.com/hosting/settings --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "sympy-issues" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/sympy-issues?hl=en -~----------~----~----~----~------~----~------~--~---
