[onewhippedpuppy]

It already has an equation library, I'd just like to add some. In this case it's multi-variable equations for my engineering econ class, but it would come in handy in other classes as well. I'd like to put in the equation as a function of whatever, put in my numbers and get an answer. It works fine with the pre-programmed equations, but I can't get anything with more than one variable, or a variable other than x to work.