Community Tip - You can Bookmark boards, posts or articles that you'd like to access again easily! X
You will probably not get it. Read here: https://community.ptc.com/t5/PTC-Mathcad-Tips/Official-PTC-Mathcad-15-and-Prime-1-6-End-of-Sale-Announcement/m-p/757888#M151
Instead you can try a trial for Mathcad Prime 8. See here for installation: https://community.ptc.com/t5/PTC-Mathcad-Installation/All-About-Mathcad-Software-Installation/m-p/706433#M26
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Luc