User's Manual
Tables and Reference Information A-9
8399APXA.DOC TI-83 international English Bob Fedorisko Revised: 02/19/01 1:25 PM Printed: 02/19/01 1:40 PM
Page 9 of 58
Function or Instruction/
Arguments Result
Key or Keys/
Menu or Screen/Item
fMax(
expression
,
variable
,
lower
,
upper
[
,
tolerance
]
)
Returns the value of 
variable
where the local maximum of
expression
 occurs, between
lower
 and 
upper
,
with
specified 
tolerance
.
MATH
7:fMax(
2
-
6
fMin(
expression
,
variable
,
lower
,
upper
[
,
tolerance
]
)
Returns the value of 
variable
where the local minimum of
expression
 occurs, between
lower
 and 
upper
, with
specified 
tolerance
.
MATH
6:fMin(
2
-
6
fnInt(
expression
,
variable
,
lower
,
upper
[
,
tolerance
]
)
Returns the function integral o
f
expression
 with respect to
variable
, between 
lower
 and
upper
, with specified
tolerance
.
MATH
9:fnInt(
2
-
7
FnOff
 [
function#
,
function#
,...,
function n
]
Deselects all 
Y= 
functions or
specified 
Y= 
functions.
Y-VARS On/Off
2:FnOff
3
-
8
FnOn
 [
function#
,
function#
,...,
function n
]
Selects all 
Y= 
functions or
specified 
Y= 
functions.
Y-VARS On/Off
1:FnOn
3
-
8
:For(
variable
,
begin
,
end
 [
,
increment
]
)
:
commands
:End
:
commands
Executes 
commands
 through
End
, incrementing 
variable
from 
begin
 by 
increment
 until
variable
>
end
.
† 
CTL
4:For(
16
-
10
fPart(
value
)
Returns the fractional part or
parts of a real or complex
number, expression, list, or
matrix.
NUM
4:fPart(
2
-
14
10
-
11
Ü
pdf(
x
,
numerator df
,
denominator df
)
Computes the 
Û
 distribution
probability between
lowerbound 
and 
upperbound
for the specified 
numerator df
(degrees of freedom) and
denominator df
.
y
 [
DISTR
]
DISTR
8:
Û
pdf(
13
-
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