HP 38g Graphing Calculator - Manual (Page 95)

Parametric
Example,
continued
{{ZOOM}} Select in {{ ok }}
as
T XI Y1 X2
1.1?5
2.2
-.3 I.REH'IIO
l.S 2.133333 -.2 1.R02113
ill:
iTIl'iil'l
-.1
0
.1
1.B763B2
l.BHPPSR
I.BIBSBS
1.3 .2 1.7B2013
1.99999999999
You can now see that Xl=2 when T=1.25, so the particles do
not collide at X=2.
Now search for Yl=3 and Y2=3. You can use {{ZOOM}} Out to
move more quickly through the columns, but {{ZOOM}} In
again to find Y1=Y2=3.
0 0 B highlight the Y2
column
to highlight Y2=3
T Y1 X2 Y2
1.B75
l.R
l.RES
1.R5
l.R?S
2
2.5
2.5
2.?
1:1
3
.3R01B05
.312B5BR
.2350?HB
.ISBRlBi
.07BS1R5
-22-11
2.342356
2.463065
2.474205
2.440752
^u33£il£i
3
Hililill
Since Y1 and Y2 intersect (when Y=3) at the same value for T,
the particles collide at T=2 seconds.
Plotting and Exploring Functions 3-31