HP 48G User Manual

Page 80

Attention! The text in this document has been recognized automatically. To view the original document, you can use the "Original mode".

S t e p

You can see that there are three real roots (where the plot

crosses the r-axis, but you cannot see the whole function

very well. Zoom the vertical scale out to display the plot
better. (Vertical Zoom Out is one of 15 different kinds of
zoom available to vou).

[NXTl V Z O U T

ZiJ

3 :

Find a root. Once the HP 48 finds a root, the cursor will be
positioned as close to the root as possible, the calculated

value will be shown on the display and a tagged copy of the
root placed on the Stack.

CN ROO

, , , A l

RPDT: -1.1HH1H63BS

ilH

S t e p 6 :

Find a different root. Move the cursor over towards the

left-most root..

a as needed

(NXT 1 (to redisplay the menu)

R 0 0"

, , , A '

ROOT: -a.sioHH3?fi

S t e p 1 :

Find the third root,

as needed

(IMXT) (to redisplay the menu)

R O O '

. . . i \ .

. . . . .

1 ^

RDDT: S.OHlfiOHBSOE

k l

i S

6-14 Plotting Equations and Analyzing Graphs