Casio ClassPad II fx-CP400+E User Manual page 83

u rewrite [Action][Equation/Inequality][rewrite]
Function: Moves the right side elements of an equation or inequality to the left side.
Syntax: rewrite(Eq/Ineq/List [ ) ]
Example: To move the right side elements of
u exchange [Action][Equation/Inequality][exchange]
Function: Swaps the right-side and left-side elements of an equation or inequality.
Syntax: exchange(Eq/Ineq/List [ ) ]
Example: To swap the left-side and right-side elements of 3 > 5
u eliminate [Action][Equation/Inequality][eliminate]
Function: Solves one equation with respect to a variable, and then replaces the same variable in another
expression with the obtained result.
Syntax: eliminate(Eq/Ineq/List-1, variable, Eq-2 [ ) ]
Example: To transform
x y
2 + 3 = 5
u absExpand [Action][Equation/Inequality][absExpand]
Function: Divides an absolute value expression into formulas without absolute value.
Syntax: absExpand(Eq/Ineq [ ) ]
Example: To remove the absolute value from ⎜2
u andConnect [Action][Equation/Inequality][andConnect]
Function: Combines two equations or inequalities into a single expression.
Syntax: andConnect(Eq/Ineq-1, Eq/Ineq-2 [ ) ]
x
Example: To rewrite
u getRight [Action][Equation/Inequality][getRight]
Function: Extracts the right-side elements of an equation or inequality.
Syntax: getRight(Eq/Ineq/List [ ) ]
Example: To extract the right side elements of
u getLeft [Action][Equation/Inequality][getLeft]
Function: Extracts the left-side elements of an equation or inequality.
Syntax: getLeft(Eq/Ineq/List [ ) ]
Example: To extract the left side elements of
u and [Action][Equation/Inequality][Logic][and]
Function: Returns the result of the logical AND of two expressions.
Syntax: Exp/Eq/Ineq/List-1 and Exp/Eq/Ineq/List-2
Example: To obtain the result of the logical AND of
y = 2 x + 3 to x =, and substitute the result into
x
> –1 and < 3 into a single inequality
x x x 2
+ 3 = 5 – to the left side
x
– 2
– 3 ⎜ = 9
x
y x 2 x
= 2 + 3 + 5
y x x
= 2 2 + 3 + 5
x 2 x
> 1 and < 0
y
Chapter 2: Main Application 83