Maths computer program?

Question

Have been using Microsoft maths, and have found it useful when it comes to looking at graphs and doing simultaneous equations... but don't know how to, lets say, if i'm given n=r-t and need to make r the subject. Can this program do this?? Is there a better program I can use??

Answer 1

There are a couple of good Maths programmes notably MATLAB and  Maple are pretty good.

If you go to google and look for free trials then they would be suitable.  My favourite is Maple.  

Answer 2

Can only try

Answer 3

Actually microsoft would be the best thing to use ive actually used it for problems like that and it actually helps figure out if r or whatever letter is the subject