Casio CFX-9970G Algebraic Expressions Manuel d'utilisateur télécharger pdf (Page 8)

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Example To solve AX+B = 0 for X

5(SOLV)1(solve)aA

v+aB,vw

• Other solve functions are available that produce numeric calculation results .

uConvert to Numeric Value —— (appr)

This command converts an expression to a numeric value.

Syntax: approx <expression>

Example To convert the expression 2 to a numeric value

6(g)6(g)1(appr)

!9cw 1.414213562

• Any command to the left of approx causes an error.

Example 1+ approx ( 2 ) (Causes an error.)

• Inputting another ALGBR Mode command or the signum( function into the

approx command causes an error.

Example approx approx 2 (Causes an error.)

k Difference Between "approx" and Standard Calculations

approx differs from standard calculations (calculations that do not use natural

display notation) in the number of display digits and handling of variables. With

standard calculations, calculation results are displayed without using exponential

notation.

Example jMcaw 12157665459056928801

When part of the expression includes a variable, the variable is processed as a

variable regardless of whether or not it has been assigned a value.

Example f*aA+dw 5A + 3

20- 3 ALGBR Mode Commands

{

–B

}

X =

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Casio CFX-9970G Algebraic Expressions Manuel d'utilisateur Page 8