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/
2.<'-3x2 e; 0
rmm
@!i!)~ (])(INEQ)CIJ(aX' + bX' + cX+ d)
!I) (aX' + bX' + cX + d e; 0)
21EJ831EJ
m
...
I · 2 b -3 IIIIiIr.
aX3+t.X2+cX+d~0
o
X=A.B~X
IEJ I
X=O, ~ ~X
/
3x>+3x2-x>0
Em
@!i!)~(])(INEQ)CIJ(aX'+ bX' + cX+d)
(])(aX'+ bX' +cX+ d > 0)
31EJ31EJ811EJ
Note:
Solutions are displayed as shown
here when Linear Display is selected.
ID
Math
I b 3
c _I '-"1
aX3+bX2+cX+d>0
o
m
A<X<B,C<X
A=
-1.263762616
B=
0
C=
0.2637626156
Special Solution Display
.
"All Real
Numbers"
appears
on the
solution
screen
when
the
solution
of an
inequality is all numbers.
x2 i: 0
rmm
@!i!) ~
(]) (INEQ) (]) (aX' + bX + c)
!I) (aX' + bX + c e; 0)
1 IEJ 0 IEJ 0 IEJ IEJ
Ii)
Malll
All Real Numbers
.
"No-Solution"
appears
on the solution
screen
when
no solution
exists
for
an inequality (such as X' < 0).
rU~VERfFY
iVEfill:'l~ c_~."--
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 4V9
=
12 is true
rmm
1. Press @!!I~ CIJ(VERIF) to enter the VERIFY Mode.
E-45
ID
Malll
TRUE/FALSE
2. Input
4V9
=
12.
4GSJ9 <E>l!i!!IlII (VERIFY) (]) (=)12
. You can select the equality symbol or
inequality symbol from the menu that
appears when you press l!i!!IlII(VERIFY).
3. To verify, press IEJ.
IiJ M.th.
4./9=12
TRUE
You can input the following expressions
for verification in the VERIFY
Mode.
.
Equalities or inequalities that include one relational operator 4
= m,
4 '" 3,
" >
3, 1 + 2 :;; 5, (3 x 6) < (2 + 6) x 2, etc.
.
Equalities or inequalities that include multiple relational operators 1 ;; 1 <
1 + 1, 3 < " < 4, 2'
=
2 + 2
=
4, 2 + 2
=
4 < 6, 2 + 3 = 5 '" 2 + 5 = 8, etc.
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
lelt
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.
.
+R, 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 followingtypes of expressions cause a Syntax ERROR and cannot
be verified.
.
An expression
with
nothing
on the
left
side
or right
side
(Example:
=
5..f'f)
.
An expression
in which a relational
operator
is inside of a fraction or function
(Example:
1
=
1, cos
(8 ;a 9»
2
.
Anexpression in whicha relationaloperator is enclosed in parentheses
(Example:8 < (9 < 10»
.
An expression in which multiple relational operators that are not oriented
in the same direction (Example: 5 ;a 6 e; 4)
.
An expression
that contains
two of the following operators
in any combination
(Example: 4 < 6 '" 8)
. An expression
that contains
consecutive
relational
operators
(Example: 5 e; > 9)
E-46
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