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Reverse, Concatenate, Position – HP Prime Graphing Calculator User Manual

Page 465: Size, List

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Lists

461

Reverse

Creates a list by reversing the order of the elements in a
list.

REVERSE(list)

Example:

REVERSE({1,2,3}) returns {3,2,1}

Concatenate

Concatenates two lists into a new list.

CONCAT(list1,list2)

Example:

CONCAT({1,2,3},{4}) returns {1,2,3,4}.

Position

Returns the position of an element within a list. The
element can be a value, a variable, or an expression. If
there is more than one instance of the element, the
position of the first occurrence is returned. A value of 0 is
returned if there is no occurrence of the specified element.

POS(list, element)

Example:

POS ({3,7,12,19},12) returns 3

Size

Returns the number of elements in a list.

SIZE(list)

Example:

SIZE({1,2,3}) returns 3

LIST

Creates a new list composed of the first differences of a
list; that is, the differences between consecutive elements
in the list. The new list has one less element than the
original list. The 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

}

.

LIST(list1)