HP 48gII Graphing Calculator Manual do Utilizador descarregar pdf (Página 798)

The same example, corresponding to the RPN operating mode, is shown next:

Approximate vs. Exact CAS mode

When the _Approx is selected, symbolic operations (e.g., definite integrals,

square roots, etc.), will be calculated numerically. When the _Approx is

unselected (Exact mode is active), symbolic operations will be calculated as

closed-form algebraic expressions, whenever possible.

The following screen shows a couple of symbolic expressions entered with an

active exact mode in Algebraic operating mode:

In Algebraic mode, the object entered by the user is shown in the left-hand

side of the screen, followed immediately by a result in the right-hand side of

the screen. The results shown above show the symbolic expressions for ln(2),

i.e., the natural logarithm of 2, and

5 , i.e., the square root of 5. If the

_Numeric CAS option is selected, the corresponding results for these

operations are as follows:

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HP 48gII Graphing Calculator Manual do Utilizador Página 798