OK, so I'm doing a computation and my result is something I called
thirdroot. I'm trying to test whether it's equal to a particular
expression. Can someone explain what is wrong here?
(s*t+1)^2/(s+t)^2
(s*t + 1)^2/(s + t)^2
factor(thirdroot+1)
(s*t + 1)^2/(s + t)^2
thirdroot+1-(s*t+1)^2/(s+t)^2
((s^2 - 1)*t^2 - s^2 + 1)/(s^2 + 2*s*t + t^2) - (s*t + 1)^2/(s + t)^2 + 1
simplify(thirdroot+1-(s*t+1)^2/(s+t)^2)
((s^2 - 1)*t^2 - s^2 + 1)/(s^2 + 2*s*t + t^2) - (s*t + 1)^2/(s + t)^2 + 1
expand(thirdroot+1-(s*t+1)^2/(s+t)^2)
-s^2/(s^2 + 2*s*t + t^2) - 2*s*t/(s^2 + 2*s*t + t^2) - t^2/(s^2 + 2*s*t + t^2)
+ 1
Seeing a 0 would make me happier...
Fernando
--
=============================================================
Fernando Q. Gouvea http://www.colby.edu/~fqgouvea
Carter Professor of Mathematics
Dept. of Mathematics and Statistics
Colby College
5836 Mayflower Hill
Waterville, ME 04901
When God is invisible behind the world, the contents of the world will
become new gods; when the symbols of transcendent religiosity are
banned, new symbols develop from the inner-worldly language of science
to take their place.
-- Eric Voegelin
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