Francois Maltey <[EMAIL PROTECTED]> writes: > Waldek and martin wrote about trigcat : > > I read (and understand) each argument pro and cons, but I find very > important to get the right draw in > > draw (asin sin x, x=-10..10) > draw (acos sin x, x=-10..10) > > So I vote to remove the default rewrite rules asin sin x = x and others.
> Then in expression asin sin x remains and a function normalize (or rewrite) > may be add to transform asin sin x in x only if the user wants it. ... > I hope it's possible to improve the actual result for this command : [asin > sin (k*%pi/8) for k in 0..100] actually, that should be added to the testsuite. I agree, but things are not that easy, I'm afraid. > Then I see the question : > Is asin 1 = %pi/2 remains in expression ? > > It's the choice of (all?) other cas, and usual mathematic... > But this implicitely gives notice a branch-cut. > > Or asin 1 lets asin 1 and we need an other rewrite/usual-normalize- > branch-cut function that get %pi/2 for it. Yes, I guess these are the only two possibilities. Martin --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "FriCAS - computer algebra system" 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/fricas-devel?hl=en -~----------~----~----~----~------~----~------~--~---
