Casio ClassPad 300 PLUS User Manual page 119

k Equal Symbols and Unequal Symbols (=, ≠, <, >, <, >)
You can use these symbols to perform a number of different basic calculations.
Problem
To add 3 to both sides of
x x
= 3.
Subtract 2 from both sides
y < 5. y
of
Tip
• In the "Syntax" explanations of each command under "2-7 Using the Action Menu", the following
operators are indicated as "Eq/Ineq": =, ≠, <, >, <, >. Whether or not the "Eq/Ineq" operators
include the "≠" operator is specified for each command by a separate note.
• An expression that contains multiple equation or inequality operators cannot be input as a single
expression. For output expressions, an expression can be output with multiple operators only in
the case of inequality operators that are facing in the same direction (example: –1<
x 2
Example: solve( – 1 < 0,
k "with" Operator ( | )
The "with" (I) operator temporarily assigns a value to a variable. You can use the "with"
operator in the following cases.
• To assign the value specified on the right side of | to the variable on the left side of |
• To limit or restrict the range of a variable on the left side of | in accordance with conditions
provided on the right side of |
The following is the syntax for the "with" (I) operator.
Exp/Eq/Ineq/List/Mat|Eq/Ineq/List/(and operator)
You can put plural conditions in a list or connected with the "and" operator on the right side.
"≠" can be used on the left side or the right side of |.
Problem
x 2 x
Evaluate + + 1 when
x
= 3.
x
2
For – 1 = 0, determine
x x
the value of when
Determine the value of
x x
abs ( ) when >0.
2-4-11
Function Calculations
Use this keyboard:
mth abc
MATH
+ 3 = 6
OPTN MATH
– 2 < 3
x ) w
{–1 <
Use this keyboard:
mth abc
OPTN SMBL
13
OPTN SMBL
> 0.
x
{ = 1}
OPTN SMBL
x
20050501
cat 2D
(X= 3 )+ 3 w
Cmd
(Y
Cmd
x
< 1}
cat 2D
X{ 2 +X+ 1 UX
Cmd
= 3 w
[solve] X{ 2 - 1 = 0
Cmd
,X)UX
$X)UX
Cmd
Operation
5 )- 2 w
x
<1).
Operation
0 w
0 w