Quadratic equations, Graphing and translations of quadratic equations – Sharp EL-9900 User Manual
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5
Basic Keyboard/ALGEBRA USING THE SHARP EL-9900
Copyright © 2002, Sharp Electronics Corporation. Permission is granted to photocopy for educational use only.
Graphing and translations of quadratic equations
1.
Turn the calculator on and press Y= . Press CL to remove an old Y1
expression. Press ENTER CL to remove an old Y2 expression.
2.
To enter the quadratic equation ( y = x
2
) for Y1, press x x
2
.
Enter the viewing window range by pressing ZOOM A (Zoom) 7 (Dec).
3.
When 2 is added to x
2
, the resulting equation is y = x
2
+ 2. Enter this
function for Y2 by pressing Y=
▼
x x
2
+ 2 . Press GRAPH .
What does the addition of 2 do?
4.
When -2 is added to x
2
, the resulting equation is y = x
2
– 2. To change Y2
for this expression, press Y=
▼
CL
x x
2
– 2 ENTER GRAPH .
What does the addition of -2 do?
QUADRATIC EQUATIONS