User's Guide

(SETUP) (Fix)
(VECTOR) (VctA)
(VECTOR) (Dot)
(VECTOR) (VctB)
(Abs) (VECTOR) (VctA)
(Abs) (VECTOR) (VctB)
(cos
-1
)
Inequality Calculations (INEQ)
Y
ou can use the following procedure to solve a quadratic inequality or
cubic inequality.
1. Press
(INEQ) to enter the INEQ Mode.
2. On the menu that appears, select an inequality type.
To select this inequality
type:
Press this key:
Quadratic inequality (aX
2
+ bX + c)
Cubic inequality (aX
3
+ bX
2
+ cX + d)
3. On the menu that appears, use keys through to select the
inequality symbol type and orientation.
4. Use the Coef
ficient Editor that appears to input coefficient values.
• To solve x
2
+ 2x - 3 < 0, for example, input the coefficients a = 1, b = 2,
c = -3 by pressing 1
2 3 .
• To change a coefficient value you already have input, move the cursor
to the appropriate cell, input the new value, and then press .
• Pressing will clear all of the coefficients to zero.
Note: The following operations are not supported by the Coef
ficient
Editor:
, (M-), (STO). Pol, Rec, ÷R, and multi-
statements also cannot be input with the Coef
ficient Editor.
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