HP 38g Graphing Calculator User Manual
Page 86
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AREA
You move the cursor to the starting point first, then shade the
area.
{{MENU}} {{FCN}}
Select
Area. . . {{OK}}
{{OK}}
to set starting point
Q
10 times
{{OK}}
,, ^
[ /
S E L E C T E N D P O I N T
r
R C T i r o a i
........................... \ l
The shaded area has a value of -0,666666666667 (to 12-digit
accuracy). It is negative because the region lies below the
x-
axis.
Enter a second expression,
f(x)
= in Function aplet, and
find the intersection of it with
f(x) = x ‘ - l .
Select the Function aplet
SYMB
{{X}}
3 I
enter
)
FUNCTION SVHiOLIC VIEM^
^ F l < : x > = x a
-1
^F2CX>=X''3
F3(:x:)=
F4<x:>=
F5<X>=
Esnoanii
iHHiiBirang
INTERSECT You must specify whether to f i n d the intersection with the
second function or with the x-axis.
I PLOT I {{MENU}} {{FCN}}
Select
Intersection
{{OK}}
Select the function F(X)=X''3
(not the x-axis)
{{
ok
}}.
, . A |
1
/
n
l - S E C T :
3-22 Plotting and Exploring Functions