HP Prime Graphing Wireless Calculator Manual do Utilizador descarregar pdf (Página 434)

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Function app functions

The Function app functions provide the same functionality found in the Function app's Plot view under the

FCN menu. All these operations work on functions. The functions may be expressions in X or the names of the

Function app variables F0 through F9.

AREA

Area under a curve or between curves. Finds the signed area under a function or between two functions. Finds

the area under the function Fn or below Fn and above the function Fm, from lower X-value to upper X-value.

AREA(Fn,[Fm,]lower,upper)

Example:

AREA(-X,X

-2,-2,1) returns 4.5

EXTREMUM

Extremum of a function. Finds the extremum (if one exists) of the function Fn that is closest to the X-value

guess.

EXTREMUM(Fn, guess)

Example:

EXTREMUM(X)

-X-2,0 returns 0.5

ISECT

Intersection of two functions. Finds the intersection (if one exists) of the two functions Fn and Fm that is

closest to the Xvalue guess.

ISECT(Fn,Fm,guess)

Example:

ISECT(X,3-X,2) returns 1.5

ROOT

Root of a function. Finds the root of the function Fn (if one exists) that is closest to the X-value guess.

386 Chapter 22 Functions and commands

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