You are downloading the Mathematicus XAP file v18.104.22.168 for Windows Phone. Mathematicus is a free and useful Education app: Don't spend time to write down math formulas ever again!Mathematicus is the source of all math formulas you may need, covering many important ... You can now download the offline XAP file to install & try it.
Download Locations for Mathematicus 22.214.171.124 XAP file
Important Notice: Now Due To Unspecified Limitations, You Can Not Use The Offline XAP 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 Mathematicus XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.