Casio CLASSPAD 330 3.04 - Manual (Page 141)

20090601
2-4-14
Function Calculations
I Equal Symbols and Unequal Symbols (=, x, <, >, , )
You can use these symbols to perform a number of different basic calculations.
Problem
Use this keyboard:
Operation
mth abc cat 2D
To add 3 to both sides of
x = 3. x + 3 = 6
G MATH Cmd 7 3 
3 U
Subtract 2 from both sides
of
y  5. y – 2  3
OPTN MATH Cmd 8 5  2 U
Tip
• In the “Syntax” explanations of each command under “2-8 Using the Action Menu”, the following
operators are indicated as “Eq/Ineq”: =, x, <, >, , . Whether or not the “Eq/Ineq” operators
include the “ x” 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 <1).
Example: solve( x 2 – 1 < 0, x ) U {–1 < x < 1}
I “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.
“
x” can be used on the left side or the right side of |.
Problem
Use this keyboard:
Operation
mth abc cat 2D
Evaluate x 2 + x + 1 when
x = 3. 13
OPTN SMBL Cmd 7Y 2
7
1 47
3 U
For x 2 – 1 = 0, determine
the value of x when x > 0.
{ x = 1}
OPTN SMBL Cmd [solve] 7Y 2 1 0
747
0 U
Determine the value of
abs (
x ) when x >0. x
OPTN SMBL Cmd 747 0 U