User's Manual

11-12 Lists
8311LIST.DOC TI-83 international English Bob Fedorisko Revised: 02/19/01 1:21 PM Printed: 02/19/01 1:37 PM
Page 12 of 18
seq( (sequence) returns a list in which each element is the
result of the evaluation of
expression
with regard to
variable
for the values ranging from
begin
to
end
at steps
of
increment
.
variable
need not be defined in memory.
increment
can be negative; the default value for
increment
is 1.
seq( is not valid within
expression
.
seq(
expression
,
variable
,
begin
,
end
[
,
increment
]
)
cumSum( (cumulative sum) returns the cumulative sums of
the elements in
list
, starting with the first element.
list
elements can be real or complex numbers.
cumSum(
list
)
@
List(
returns a list containing the differences between
consecutive elements in
list
.
@
List
subtracts the first
element in
list
from the second element, subtracts the
second element from the third, and so on. The list of
differences is always one element shorter than the original
list
.
list
elements can be a real or complex numbers.
@
List(
list
)
Select( selects one or more specific data points from a
scatter plot or xyLine plot (only), and then stores the
selected data points to two new lists,
xlistname
and
ylistname
. For example, you can use
Select( to select and
then analyze a portion of plotted CBL 2/CBL or CBR data.
Select(
xlistname
,
ylistname
)
Note:
Before you use
Select(
, you must have selected (turned on) a
scatter plot or xyLine plot. Also, the plot must be displayed in the
current viewing window (page 11
.
13).
seq(
cumSum(
@
List(
Select(