Graphics Programs Reference
In-Depth Information
12
10
8
6
4
2
0
-2
-2
-1.5
-1
-0.5
0
0.5
1
1.5
2
Problem 10
Let's plot 2
x
and
x
4
and look for points of intersection. We plot them first
with
ezplot
just to get a feel for the graph.
ezplot('xˆ4'); hold on; ezplot('2ˆx'); hold off
2
x
50
45
40
35
30
25
20
15
10
5
0
−
6
−
4
−
2
0
2
4
6
x
Note the large vertical range. We learn from the plot that there are no points
of intersection between 2 and 6 or
−
6 and
−
2; but there are apparently two
points of intersection between
−
2 and 2. Let's change to
plot
now and focus
on the interval between
−
2 and 2. We'll plot the monomial dashed.
X = -2:0.1:2; plot(X, 2.ˆX); hold on; plot(X, X.ˆ4, '--');
hold off
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