Re: How do I use TrigSolve.nb ?

*To*: mathgroup at smc.vnet.net*Subject*: [mg50538] Re: How do I use TrigSolve.nb ?*From*: ab_def at prontomail.com (Maxim)*Date*: Thu, 9 Sep 2004 05:18:45 -0400 (EDT)*References*: <chmnk6$9l8$1@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

bfeeny at mac.com (Brian Feeny) wrote in message news:<chmnk6$9l8$1 at smc.vnet.net>... > I am pretty new to Mathematica, and I have never used anything outside > what comes with it. > I downloaded the TrigSolve.nb file from wolfram.com > > http://library.wolfram.com/infocenter/MathSource/4486/ > > How can I use the TrigSolve[] function inside of it? I know I must > have to load the .nb file somehow. I am using the OS X version of > Mathematica 5. > > Appreciate any help You need to open the .nb file (File -> Open) and evaluate the cell that contains the definition of the TrigSolve. Since you have Mathematica 5, just use Reduce instead of TrigSolve: In[1]:= Reduce[Sin[x] == 0, x] Out[1]= C[1] \[Element] Integers && (x == 2 Pi C[1] || x == Pi + 2 Pi C[1]) Because of some glitches in Reduce, it is a good idea to add the domain specification (Reduce[Sin[x]==0,x,Reals]), without it Reduce may give an incorrect result for trigonometric equations. Maxim Rytin m.r at inbox.ru