## #math - Tue 13 Mar 2007 between 00:02 and 00:23

### NY Lost Funds

 bsmntbombdood % asin[Sqrt[1/2]] //FullSimplify mbot bsmntbombdood: asin[1/Sqrt[2]] bsmntbombdood helpful.% asin[Sqrt[.5]] //FullSimplify mbot bsmntbombdood: asin[0.7071067811865476] Manyfold yes he is indeed bsmntbombdood % Asin[Sqrt[.5]] //FullSimplify mbot bsmntbombdood: Asin[0.7071067811865476] bsmntbombdood what's the function for arc sine? Cale ArcSin bsmntbombdood % ArcSin[Sqrt[.5]] //FullSimplify mbot bsmntbombdood: 0.7853981633974484 Cale % ArcSin[Sqrt[1/2]] mbot Cale: Pi/4 bsmntbombdood much better Cale and that's why you don't use decimals with mathematica unless you really know you want an approximation :) Manyfold Cale: how good are with PDE's? bsmntbombdood Well, I thought it wasn't going to be able to give me an exact answer Cale I don't know anything about PDE's. Manyfold :(well you surely know \partial flaminguican _llll_: I'm not seeing how writing the equation in terms of tangent helps bsmntbombdood flaminguican: what's wrong with my solution? _llll_ what did you end up with? flaminguican 0 _llll_ ?you should end up with an equation... flaminguican meh, but I must be doing something wrong. Let me rework some stuff bsmntbombdood oh, right% ArcTan[1] mbot bsmntbombdood: Pi/4 bsmntbombdood yepsin(x) = tan(x)cos(x) flaminguican Hm, okay, I see where you guys are going with the tangent thing now. But that means I must have messed up a sign somewhere farther back, because it gives me the correct answer with the incorrect sign :/Alright, well thanks for all of the help again. I'll figure out the rest from here :) kmh hmmmwhat's the problem ? Olathe % 666 Tan[1/212] //N mbot Olathe: 3.141532733604734 bsmntbombdood he made me curious