HP 48G User Manual
Page 80
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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
1
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
1
1
A
RPDT: -1.1HH1H63BS
"\
1
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 '
:
1
ROOT: -a.sioHH3?fi
AI
36
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