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To evaluate the expression we can use the EVAL function, as follows:
If the CAS is set to Exact, you will be asked to approve changing the CAS
setting to Approx. Once this is done, you will get the same result as before.
An alternative way to evaluate the expression entered earlier between quotes
is by using the option
We will now enter the expression used above when the calculator is set to the
RPN operating mode. We also set the CAS to Exact and the display to
Textbook. The keystrokes to enter the expression between quotes are the
same used earlier, i.e.,
Resulting in the output
Press
once more to keep two copies of the expression available in the
stack for evaluation. We first evaluate the expression using the function EVAL,
and next using the function
NUM: .