Casio CFX-9970G Algebraic Expressions - Manual (Page 8)

356
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 .
uuuuu
Convert to Numeric Value —— (appr)
This command converts an expression to a numeric value.
Syntax: approx
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 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 j
Mcaw
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 =
A
P.107