Texas Instruments TI-84 - Manual (Page 499)

Chapter 17: Activities 496
Finding the Area between Curves Finding the Area between Curves Finding the Area between Curves Finding the Area between Curves
Problem Problem Problem Problem
Find the area of the region bounded by:
Procedure Procedure Procedure 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=300X à (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= L 5
Ymax=10
Yscl=1
Xres=1