Symbolics > Working with Symbolics > Simplifying and Rewriting Expressions > About Simplifying and Rewriting Expressions
  
About Simplifying and Rewriting Expressions
If PTC Mathcad returns a symbolic expression that is lengthy and complicated, you can simplify or rewrite the result using the following keywords:
simplify—Simplifies expressions using algebraic, trigonometric, and exponential identities.
collect—Collects terms of a multivariable polynomial with respect to one of the variables.
combine—Combines terms involving elementary functions, including ex, ln, sin, and cos.
rewrite—Rewrites expressions in terms of elementary functions.