Casio fx-350MS Booklet

CHAPTER 3 Quadratic Functions
12
–
=
1
1
1
+
(
–
x
2
1
5
4
X
2
X
)
2
¡
(
2
X
)
À
=
=
=
3
+
¡
2
(
–
)
1
)
(
=
=
Determine the roots and axis of symmetry of the quadratic function
15112
2
+−= xxy .
OPERATION
1. Use the formula
a
acbb
x
2
4
2
−±−
= to determine the roots. While in
COMP mode,
press
The first root is 3.
2. To determine the second root, we use the REPLAY function.
Press once to return to this display screen on right.
Press numerous times until the cursor is below the ‘+’ sign.
Now press
Followed by the key strokes
The second root is 2.5.
3. To find the axis of symmetry, press
The axis of symmetry is
75.2=x
You may scroll through the last nine calculations by pressing the Replay function .
Exam
p
le 1
11+À( (-11)
2
-4X2X15
12
Ans¡(2X2)
3
11-À( (-11)
2
-4X2X15
10
Ans¡(2X2)
2.5
Ans+3
5.5
Ans¡2
2.75
11+À( (-11)
2
-4X2X15
12

Casio fx-350MS Specifications

General

Type	Scientific
Form factor	Pocket
Power source	Battery

Weight and Dimensions

Weight	100 g
Dimensions (WxDxH)	12.2 x 85 x 155 mm