[JayTee]

Thanks guys

This is my first experience with a CAS. I figured out what I had to do, but I had to work out the function on my own. I was trying to find out if there was a way to define a cosine wave over a specific interval with a slope +/- tan(80) at its center and a limited amplitude and be continuous with a piecewise function.

I haven't studied much higher math, so I pretty much had to figure out a method on my own.