First post on this part of the stackexchange network, I was just wondering if Mathematica allows one to quickly see if an expression is always within a certain range given values for the parameters it depends on?
For example, I have an expression $X = X(a,b,c,d,e,f)$ and know that two of those six variables are always positive and the other four are always negative. I am finding it difficult to see in general whether this expression is within a certain range (e.g between $-1$ and $1$) by hand so was wondering whether this software would do it for me? It is part of a physics project and I have tried some numerical values by hand and the expression is indeed within the range required however seeing the general case is always more satisfactory.
Reduce[]
. Without an expression for $X$, it's difficult to say something more helpful. $\endgroup$ – J. M. will be back soon♦ Jul 20 '15 at 11:20