HP Prime Graphing NW280AAABA ContainsList, Element or containsVector, Element, CopyVarVar1,Var2

contains Given a list or vector and an element, returns the index of the first occurrence of the element in the list or vector; if the element does not appear in the list or vector, returns 0.

contains((List, Element) or contains(Vector, Element)

Example:

contains({0,1,2,3},2) returns 3

CopyVar Copies the first variable into the second variable without evaluation.

CopyVar(Var1,Var2)

correlation Returns the correlation of the elements of a list or matrix.

correlation(List) or correlation(Matrix)

Example:

correlation

1 2	returns	33
1 1		6------⋅--------	31-----
4 7

count Applies a function to the elements in a list or matrix and returns their sum.

count(Function, List) or count(Function, Matrix)

Example:

count((x→x,[2,12,45,3,7,78]) returns 147

covariance Returns the covariance of the elements in a list or matrix.

covariance(List) or covariance(Matrix)

Example:

	⎛	1 2	⎞
covariance	⎜		⎟	returns	11
	⎜	1 1	⎟		3
	⎜		⎟		------
	⎝	4 7	⎠

386 Functions and commands