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HP 48g Graphing Calculator User Manual

Page 295

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The PICTURE FCN Menu (continued)

Key

Description

Extremum.

Moves the cursor to an extremum (local

minimum or maximum) or other critical point and
displays the ( x , y ) coordinates. If the closest extremum

or inflection point is not in the display window, briefly

displays the message

OFF SCREEN

before

displaying

the value.

Function Value.

Displays the function value at the

current r-value of the cursor, and moves the cursor to

that point on the function curve.

p >

Derivative Plot.

Plots the first derivative of the

function and replots the original function. Also adds

the symbolic expression for the first derivative to the
contents

oi EQ.

(If

EQ

is a list, F ' adds the expression

to the front of the list. If

EQ

is not a list, F ' creates a

list and inserts the expression to the front of the list.)

1

nm,_.

Tangent Line.

Draws the line tangent to the current

function at the z-value represented by the cursor. It

returns the equation of the tangent line to the stack.

Next Equation.

R,otates the list in

EQ

and displays

the equation now at the beginning of the list. (The
second equation is moved to the beginning of the list

and the first equation is moved to the end.)

I

E \ 4

View Equation.

Displays currently selected equation

from EQ or EQ list.

p p

Picture.

Displays the PICTURE menu.

22

Plotting 22-11

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