What was the 1st CAS pocket calculator?

[Joe Horn]

(02-09-2017 04:09 PM)Vtile Wrote:  HP 100LX with derive?

Before that, the HP-71B in 1987 was running an early version of Derive called "Calculus Demon". Although not as powerful as Derive, it performed a lot of impressive symbolic math. It was featured in HPX Exchange V1 N2 (Mar/Apr 1987), page 14. If you want to play with it on your HP-71, it is called "SYMBOLIX" on Swapdisk 11 which can be downloaded as a LIF disk image (".DAT" file) HERE.