28S graphing multiple equations?

[Giuseppe Donnini]

Now, that's the way helpful information should be presented in this forum: complete, thorough, clearly structured, and well written. Thank you very much.

I just want to observe that the GETI command, as applied to a list, places the extracted object at stack level 1, leaving the (incremented) index in stack level 2. Here is the complete stack diagram of GETI for lists:

{list} index --> {list} index+1 object(i)

So in order for your example to work properly, you have to replace the first DUP in LDRW with OVER.

( Readers should also be aware that the calculator has to be in radians mode in order to draw appropriately scaled graphs for the given examples. This should be obvious to anyone interested, but one never knows… )