It seems the frenech colleagues ported the XCAS (CAS engine developed by B. Parisse) to Casio Graph 90+E / fx-CG50. I am looking forward to test it.
https://tiplanet.org...hp?f=51&t=21646
edited: Wow, this add-in works like a charm
Edited by pan.gejt, 19 July 2018 - 09:37 AM.