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Chapter 4: Graphing Features
6 Draw
Draw
equation
Draws an additional graph based on a given expres-
sion.
Example
• Draw the graph of
y = 3x
2
-4x+2
.
1. Select
Draw
.
2. Enter “3x
2
–
4x
+
2” on the
line.
3. Press
E
.
Note:
This tool can be used with
rectangular coordinate graphs only.
7 Shade(
Shade(
equation1, equation2 [, lower value, upper
value])
Draws two graphs, and shades the area between the
two. If the x range is specified, it shades the area within
the specified range.
Example
• Shade the area enclosed by
y =
1
4
x
2
– 8
and
y = x
.
1. Select
Shade(
.
2. Enter “
1
4
x
2
–
8, x)” on the
line.
3. Press
E
.
Example
• Shade the area enclosed by
y =
1
4
x
2
– 8
and
y = x
within the range of
–2
≤
x
≤
3
.
Before starting operation, Select
ClrDraw
to clear the
graphs previously drawn.
1. Select
Shade(
.
2. Enter “
1
4
x
2
–
8, x,
-
2, 3)”
on the line.
3. Press
E
.
Note:
It is also possible to specify
a function if stored in Y0 to Y9.
