Use and properties of the Series command.

Good morning, all.

     I need some guidance on the use of the Series command.

I uinderstand the stricture of not expanding a Talyors Series too far, but I have a quotient with numerator and denonminator having many terms involving  exp(x), cosh(x) etc, all based upon the exponential property. These should be solvable using expansions of exp(x) and the binomial theorem.

Does Mathcad 15 or Prime have such built-in functionality built into Series to avoid Taylor?

My equations contain data spanning dc to nanoseconds and I need more than a three term expansion.

Practically the quotient expands into a ratio of terms involving root(s), the coomplex variable. After rationaliziing, I find thr LHP roots of the denominator and use a contour integral solution.

I really need some help, here. Still pushing boundaries and learning at age 79!

Thanks, John Archer.