HP 48gII Graphing Calculator Manual do Utilizador descarregar pdf (Página 722)

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INDEP (a)

The command INDEP specifies the independent variable and its plotting range.

These specifications are stored as the third parameter in the variable PPAR.

The default value is 'X'. The values that can be assigned to the independent

variable specification are:

• A variable name, e.g., 'Vel'

• A variable name in a list, e.g., { Vel }

• A variable name and a range in a list, e.g., { Vel 0 20 }

• A range without a variable name, e.g., { 0 20 }

• Two values representing a range, e.g., 0 20

In a program, any of these specifications will be followed by the command

INDEP.

DEPND (b)

The command DEPND specifies the name of the dependent variable. For the

case of TRUTH plots it also specifies the plotting range. The default value is Y.

The type of specifications for the DEPND variable are the same as those for

the INDEP variable.

XRNG (c) and YRNG (d)

The command XRNG specifies the plotting range for the x-axis, while the

command YRNG specifies the plotting range for the y-axis. The input for any

of these commands is two numbers representing the minimum and maximum

values of x or y. The values of the x- and y-axis ranges are stored as the

ordered pairs (x

min

, y

min

) and (x

max

, y

max

) in the two first elements of the variable

PPAR. Default values for x

min

and x

max

are -6.5 and 6.5, respectively. Default

values for x

min

and x

max

are –3.1 and 3.2, respectively.

RES (e)

The RES (RESolution) command specifies the interval between values of the

independent variable when producing a specific plot. The resolution can be

expressed in terms of user units as a real number, or in terms of pixels as a

binary integer (numbers starting with #, e.g., #10). The resolution is stored as

the fourth item in the PPAR variable.

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