Sharp EL-9900 Operation Manual page 117

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
1. Select Draw.
2. Enter "3x
on the line.
3. Press E.
Note: This tool can be used
with rectangular coordinate graphs only.
Shade( equation1, equation2 [, lower value, upper
7 Shade(
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. Select Shade(.
2. Enter "
x)" on the line.
3. Press E.
Example
• Shade the area enclosed by y =
within the range of –2 ≤ x ≤ 3.
Before starting operation, Select ClrDraw to clear the
graphs previously drawn.
1. Select Shade(.
2. Enter "
-
2, 3)" on the line.
3. Press E.
Note: It is also possible to
specify a function equation from Y0 to Y9 if stored.
2
-4x+2.
– +
2
4x 2"
1
–
x 2 8,
4
1
–
2
x 8, x,
4
1
2
x – 8 and y = x.
4
1
2 – 8 and y = x
x
4
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