HP Prime Graphing Wireless Calculator Instrukcja Użytkownika Pobierz pdf (Strona 473)

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101

contains

Given a list or vector and an element, returns the index of the rst 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 rst 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 returns

count

There are two uses for this function, in which rst argument is always a mapping of a variable onto an

expression. If the expression is a function of the variable, the function is applied to each element in the vector

or matrix (the second argument) and the sum of the results is returned; if the expression is a Boolean test,

each element in the vector or matrix is tested and the number of elements that pass the test is returned.

count(Var → Function, Matrix) or count(Var → Test, Matrix)

Example:

count(x→x

,[1 2 3]) returns 14

count(x→ x>1, [1 2 3]) returns 2

covariance

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

covariance(List) or covariance(Matrix)

Example:

covariance returns

covariance_correlation

Returns a vector containing both the covariance and the correlation of the elements of a list or matrix.

covariance_correlation(List) or

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