Sharp el-9900c Guía De Operación
107
Chapter 6: Advanced Graphing Features — Advanced Keyboard
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
4
x
2
– 8
and y = x.
1. Select Shade(.
2. Enter “
1
4
4
x
2
–
8,
x)” on the line.
3. Press
E.
Example
• Shade the area enclosed by y =
1
4
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
4
x
2
–
8, x,
-
2, 3)” on the line.
3. Press
E.
Note:
It is also possible to
specify a function equation from Y0 to Y9 if stored.