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Notice that, if your CAS is set to EXACT (see Appendix C in user’s guide)
and you enter your expression using integer numbers for integer values,
the result is a symbolic quantity, e.g.,
5*„Ü1+1/7.5™/
„ÜR3-2Q3
Before producing a result, you will be asked to change to Approximate
mode. Accept the change to get the following result (shown in Fix decimal
mode with three decimal places – see Chapter 1):
In this case, when the expression is entered directly into the stack, as soon
as you press
`, the calculator will attempt to calculate a value for the
expression. If the expression is preceded by a tickmark, however, the
calculator will reproduce the expression as entered. For example:
³5*„Ü1+1/7.5™/
„ÜR3-2Q3`
The result will be shown as follows:
To evaluate the expression we can use the EVAL function, as follows:
µ„î`
SG49A.book Page 2 Friday, September 16, 2005 1:31 PM