Casio CFX-9970G User Manual page 376

20- 3
ALGBR Mode Commands
Example
P.107 • Other solve functions are available that produce numeric calculation results .
u u u u u Convert to Numeric Value —— (appr)
This command converts an expression to a numeric value.
Syntax: approx <expression>
Example
• Any command to the left of approx causes an error.
Example
• Inputting another ALGBR Mode command or the signum( function into the
Example
k k k k 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
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
To solve AX+B = 0 for X
5(SOLV)1(solve)aA
v+aB,vw
To convert the expression 2 to a numeric value
6(g)6(g)1(appr)
!9cw
1+ approx ( 2 ) (Causes an error.)
approx command causes an error.
approx approx
jMcaw
f*aA+dw
{
X =
1.414213562
2 (Causes an error.)
12157665459056928801
5A + 3
}
–B
A
356