Infinite series

[cdmackay]

In general, if you want to see/check user variables:

created in Home, := or Sto▸
- viewed with memory manager Shift B — User Variables
- select, then delete or backspace

created in CAS, = or Sto▸
- viewed with memory manager Shift B — CAS Vars
- select, then delete or backspace
- may also be deleted with CAS function purge(), which only works on CAS vars
- purge() also removes assumptions about vars, as well as value

A couple of CAS programs have been posted on this forum in the past:

varslist()
- shows all defined lowercase single letter vars, both Home & CAS

purgeaz()
- purges all single small-letter CAS variables, excluding e & i which are reserved
- does not affect Home variables, which can only be deleted using memory manager (shift B)