Using Verify (Verif) - Casio CALCULATOR FX-85GT PLUS User Manual

Using VERIFY (VERIF)

VERIFY is a function you can use to verify whether an input equality or
inequality is true (indicated by TRUE) or false (indicated by FALSE). The
following shows the general procedure for using VERIFY.
To verify whether 4 ' 9 = 12 is true
1. Press
2. Input 4 ' 9 = 12.
4 9
• You can select the equality symbol
or inequality symbol from the menu
that appears when you press
3. To verify, press
You can input the following expressions for verification in the VERIFY
Mode.
• Equalities or inequalities that include one relational operator 4 = 16 ,
4 3, 3, 1 + 2
• Equalities or inequalities that include multiple relational operators 1
2
3 4, 2
Note: • The verification result will cause 1 to be assigned to Ans memory
when TRUE and 0 when FALSE. • The input expression can be a total of
99 bytes, including the left side, right side, and relational operators. • Any
variable (A, B, C, D, E, F, X, Y, M) input into an expression is treated as
a value, using the value currently assigned to the variable. • Pol and Rec
functions cannot be used in an expression.
In the VERIFY Mode, the calculator performs a mathematical operation
on the input expression and then displays TRUE or FALSE based on the
result. Because of this, calculation error can occur or a mathematically
correct result may not be able to be displayed when the input calculation
expression includes calculation that approaches the singular point or
inflection point of a function, or when the input expression contains multiple
calculation operations.
Expression Input Precautions
The following types of expressions cause a Syntax ERROR and cannot
be verified.
• An expression with nothing on the left side or right side (Example: = 5' 7 )
• An expression in which a relational operator is inside of a fraction or function
(Example: 1 = 1
2
• An expression in which a relational operator is enclosed in parentheses
(Example: 8
(VERIF) to enter the VERIFY Mode.
(VERIFY)
(VERIFY).
.
5, (3 × 6)
= 2 + 2 = 4, 2 + 2 = 4
, cos (8 9))
(9 10))
(=)12
(2 + 6) × 2, etc.
6, 2 + 3 = 5
E-25
Math Math
Math Math
1
2 + 5 = 8, etc.
1 + 1,