Texas Instruments TI-84 Plus Manual Book page 172

Function or
Instruction/Arguments
string begin
sub( ,
list start end
[
sum( , ,
value
tan( )
L1
value
tan ( )
expression
Tangent(
)
value
tanh( )
L1
value
tanh ( )
lowerbound
tcdf(
upperbound df
, )
row column
Text( ,
text2 text n
...
, , )
Then
See
If:Then
164
Result
length
Returns a string that is a
, )
subset of another
from
Returns the sum of
]
)
elements of
end
to
Returns the tangent of a
real number, expression,
or list.
Returns the arctangent of
a real number, expression,
or list.
value
Draws a line tangent to
,
expression
Returns hyperbolic
tangent of a real number,
expression, or list.
Returns the hyperbolic
arctangent of a real
number, expression, or
list.
Computes the Student-
,
distribution probability
between
upperbound
specified degrees of
freedom
text1
Writes
, ,
beginning at pixel
row column
( ,
row
0 
column
0 
string
begin length
to .
list
from
.
value
at = .
X
lowerbound
and
for the
df
.
text
on graph
), where
 57 and
 94.
Appendix A: Functions and Instructions
Key or Keys/Menu
or Screen/Item
y N
sub(
,
y 9
start
MATH
5:sum(
š
y A
y <
DRAW
5:Tangent(
y N
tanh(
y N
L1
tanh (
y =
t
DISTR
6:tcdf(
y <
DRAW
0:Text(