Texas Instruments TI-83 PLUS User Manual
Page 665
TI-83 Plus
Tables and Reference Information
662
Function or Instruction/
Arguments
Result
Key or Keys/
Menu or Screen/Item
4
Eff(
nominal rate
,
compounding periods
)
Computes the effective interest rate.
Œ
1:Finance
CALC
C:
4
Eff(
Else
See
If:Then:Else
End
Identifies end of For(, If-Then-Else,
Repeat, or While loop.
†
CTL
7:End
Eng
Sets engineering display mode.
†
z
Eng
Equ
4
String(
Y=
var
,Str
n
)
Converts the contents of a
Y=
var
to
a string and stores it in Str
n
.
y
N
Equ
4
String(
expr(
string
)
Converts
string
to an expression and
executes it.
y
N
expr(
ExpReg [
Xlistname
,
Ylistname
,
freqlist
,
regequ
]
Fits an exponential regression model
to
Xlistname
and
Ylistname
with
frequency
freqlist
, and stores the
regression equation to
regequ
.
…
CALC
0:ExpReg
ExprOff
Turns off the expression display
during
TRACE
.
†
y
.
ExprOff
ExprOn
Turns on the expression display
during
TRACE
.
†
y
.
ExprOn
Ü
cdf(
lowerbound
,
upperbound
,
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
9:
Û
cdf(