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Re: [mg5058] Are two expressions equal?
Posted:
Oct 30, 1996 12:16 AM


jeremy_gorman@smtp.svl.trw.com (Jeremy Gorman) Subject: [mg5058] Are two expressions equal? writes
>How can I check to see if these expressions are equal?
Jeremy,
Instead of looking at q1 == q2 you might try to try and reduce q1  q2 say by
Simplify[q1q2] or Expand[q1q2, Trig > True] (*Trig>True for Trig functions*) Together[q1q2, Trig > True]
and combinations of these.
If you get 0 you have proved equality. If you can find numerical values for the variables and constants that definitely give a nonzero value then you will have proved inequality. And if a range of random assignments of numerical values all give 0 for q1q2 it is probable that q1=q2.
Allan Hayes hay@haystack.demon.co.uk http://www.haystack.demon.co.uk/
.dem



