Texas Instruments TI-84 Plus Guide Book

Chapter 17: Activities 496
Finding the Area between Curves
Finding the Area between CurvesFinding the Area between Curves
Finding the Area between Curves
Problem
ProblemProblem
Problem
Find the area of the region bounded by:
Procedure
ProcedureProcedure
Procedure
1. Press z. Select the default mode settings.
2. Press p. Set the viewing window.
3. Press o. Turn off all functions and stat plots. Enter the upper and lower functions.
Y1=300Xà(X
2
+625)
Y2=3cos(.1X)
4. Press y / 5 to select 5:Intersect. The graph is displayed. Select a first curve,
second curve, and guess for the intersection toward the left side of the display. The
solution is displayed, and the value of
X at the intersection, which is the lower limit of
the integral, is stored in
Ans and X.
f(x)
g(x)
x
=
=
=
300x/(x
2
+ 625)
3cos(.1x)
75
Xmin=0
Xmax=100
Xscl=10
Ymin=
L5
Ymax=10
Yscl=1
Xres=1

Texas Instruments TI-84 Plus Specifications

General

Battery type	AAA
Power source	Battery
Number of batteries supported	4
Type	Graphing
Cover	No
Form factor	Pocket
Control type	Buttons
Product color	Black
USB port	Yes
USB 2.0 ports quantity	1
Digits	- digits
Display number of lines	8 lines
Display number of characters	16
RAM capacity	0.024 MB
ROM capacity	0.480 MB
Storage media type	-