Community Tip - Did you get called away in the middle of writing a post? Don't worry you can find your unfinished post later in the Drafts section of your profile page. X
I am not sure if PTC still offers a trial of Prime 5 as the current version is Prime 6 (which you sure can find at PTC's home page -> https://www.mathcad.com/en/try-and-buy/mathcad-express-free-download
