You are downloading the Calculus Course Assistant APPX file v22.214.171.124 for Windows Phone. Calculus Course Assistant is a paid and useful Education app: Taking calculus? Then you need the Wolfram Calculus Course Assistant. This definitive app for calculus—from the world leader in math ... You can now download the offline APPX file to install & try it.
Download Locations for Calculus Course Assistant 126.96.36.199 APPX file
Important Notice: Now Due To Unspecified Limitations, You Can Not Use The Offline APPX File To Install It Any More.
To try to install it manually from an SD card, you should choose one of the server location above to get the offline Calculus Course Assistant APPX file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.