HP 48gII Graphing Calculator Manuel d'utilisateur télécharger pdf (Page 160)

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• Input:  x  x

• Process: ‘LN(x+1) + EXP(x) ‘

This is to be interpreted as saying: enter a value that is temporarily assigned

to the name x (referred to as a local variable), evaluate the expression

between quotes that contain that local variable, and show the evaluated

expression.

To activate the function in ALG mode, type the name of the function followed

by the argument between parentheses, e.g., @@@H@@@ „Ü2`. Some

examples are shown below:

In the RPN mode, to activate the function enter the argument first, then press

the soft menu key corresponding to the variable name @@@H@@@ . For example,

you could try: 2`@@@H@@@ . The other examples shown above can be

entered by using: 1.2`@@@H@@@ , 2/3`@@@H@@@ .

Functions can have more than 2 arguments. For example, the screen below

shows the definition of the function K(α,β) = α+β, and its evaluation with the

arguments K(√2,π), and K(1.2,2.3):

The contents of the variable K are: <<  α β ‘α+β’ >>.

Functions defined by more than one expression

In this section we discuss the treatment of functions that are defined by two or

more expressions. An example of such functions would be













>−

<−⋅

0,1

0,12

)(

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HP 48gII Graphing Calculator Manuel d'utilisateur Page 160

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