HP 39gII, User Manual

Page: 199 / 355

Lists 189
Example:
CONCAT({1,2,3},{4})
returns
{1,2,3,4}
.
Δ
LIST
Creates a new list composed of the first differences of a
list, that is, the differences between the sequential
elements in the list. The new list has one less element than
the original list. The first differences for
{x
1
, x
2
, x
3
,. .. x
n-1
,
x
n
}
are
{x
2
–x
1
, x
3
–x
2
,... x
n
–x
n–1
}
.
Δ
LIST(
list1
)
Example:
In Home, store {3,5,8,12,17,23} in L5 and find the first
differences for the list.
HS
{3,5,8,12,17,23
S
}
A
L 5
E
b
7 2
A
L 5
E
MAKELIST
Calculates a sequence of elements for a new list.
Evaluates expression with respect to variable, as variable
takes on values from begin to end values, taken at
increment steps.
MAKELIST(
expression , variable , begin , end ,
increment
)
The
MAKELIST
function generates a sequence by
automatically producing a list from the repeated
evaluation of an expression.