Hp Prime Graphing Wireless Calculator Uživatelský manuál stáhnout pdf (Strana 217)

100

101

Functions and commands 213

expression  var

i Inserts the imaginary number i.

–1

Returns the inverse of an expression.

(Expr)

–1

Creating your own functions

You can create your own function by writing a program (see

chapter 5) or by using the simpler DEFINE functionality.

Functions you create yourself appear on the User menu (one

of the Toolbox menus).

Suppose you wanted to create the function

SINCOS(A,B)=SIN(A)+COS(B)+C.

1. Press

Sd (Define).

2. In the Name field, enter

a name for the

function—for example,

SINCOS—and tap

3. In the Function field,

enter the function.

eAA>+fAB>AC

New fields appear

below your function, one

for each variable used in

defining it. You need to

decide which ones are

to be input arguments

for your functions and

which ones are global

variables whose values

are not input within the function. In this example, we’ll

make A and B input variables, so our new function takes

two arguments. The value of C will be provided by global

variable C (which by default is zero).

4. Make sure that A and B are selected and C is not.

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