Two calculator exam problems

[Thomas Klemm]

(05-28-2014 02:11 PM)Peter Murphy Wrote:  but he's taking for granted what I cannot see at all, namely how one sets up such nested functions in the first place.

Code:

'f(x)=SIN(1/x)' ENTER
DEFINE
'g(x)=f(f(f(f(x))))' ENTER
DEFINE

You can have a look at how these function are defined. Just push them on the stack. For instance f(x):

Code:

\<< \-> x 'SIN(1/x)' \>>

Should you prefer RPL you could use this instead:

Code:

\<< \-> x \<< INV SIN \>> \>>

HTH
Thomas