# complex exponential/trigonometric

 4 Is there any command equivalent to the Mathematica's "TrigToExp" and "ExpToTrig"? Where should I look for general support on complex exponential/trigonometric functions? asked Sep 25 '10 yaman 41 ● 3 ● 4 Kelvin Li 453 ● 1 ● 10 ● 17

 3 This works for me in Sage 4.5.3: sage: x = var('x') sage: t1 = cos(x) sage: t2 = e^(I * x) / 2 / I - e^(-I * x) / 2 / I sage: sageobj(t1._maxima_().exponentialize()) 1/2*e^(-I*x) + 1/2*e^(I*x) sage: sageobj(t2._maxima_().demoivre()) sin(x)  Perhaps there's a simpler way? I don't think we've wrapped Maxima's demoivre and exponentialize in Sage. They're documented here. posted Sep 29 '10 Mitesh Patel 253 ● 3 ● 9 Oh, that's great. Can you file a ticket to do so - perhaps with Mma-like notation, if it ends up being appropriate? kcrisman (Sep 29 '10) I've opened #10038 (http://trac.sagemath.org/sage_trac/ticket/10038). Mitesh Patel (Sep 29 '10)
 0 Hi, just wondering if any work has been done on this yet? It's been a while, so I thought there may be some updates. Anyway, I'm a total exponentiation geek (or call me anti-trigonometric freak if you like), so a simple TrigToExp function in Sage would be nice. posted Mar 25 '12 daniel kho 1