HP 48gII Graphing Calculator Manual do Utilizador descarregar pdf (Página 72)

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To recover the larger-font display, press the @BIG C soft menu key once more.

Evaluating the expression

To evaluate the expression (or parts of the expression) within the Equation

Writer, highlight the part that you want to evaluate and press the @EVAL D

soft menu key.

For example, to evaluate the entire expression in this exercise, first, highlight

the entire expression, by pressing ‚ ‘. Then, press the @EVAL D soft

menu key. If your calculator is set to Exact CAS mode (i.e., the _Approx

CAS mode is not checked), then you will get the following symbolic result:

If you want to recover the unevaluated expression at this time, use the function

UNDO, i.e., …¯(the first key in the third row of keys from the top of the

keyboard). The recovered expression is shown highlighted as before:

If you want a floating-point (numerical) evaluation, use the NUM function

(i.e., …ï). The result is as follows:

1 2 ... 67 68 69 70 71 72 73 74 75 76 77 ... 863 864

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HP 48gII Graphing Calculator Manual do Utilizador Página 72

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