HP Prime Graphing NW280AAABA manual Returns

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

covariance_correlation(List) or covariance_correlation(Matrix)

Example:

	⎛	1 2	⎞
covariance_correlation	⎜		⎟	returns
	⎜⎜	1 1	⎟⎟
	⎝	4 7	⎠

11 33

------ -------------------

3 6 ⋅ 31

cpartfrac Returns the result of partial fraction decomposition of a rational fraction in the complex field.

cpartfrac(RatFrac)

Example:

	x ⎞		1	1
⎛			--	--
cpartfrac ⎝ 4------	–-----x---2-⎠	returns	2	2
			– x – 2	– x + 2
⎜	⎟		------------	------------

crationalroot Returns the list of complex rational roots of a polynomial without indicating the multiplicity.

crationalroot(Poly)

Example:

crationalroot(2*x^3+(-5-7*i)*x^2+

(-4+14*i)*x+8-4*i) returns	3------+----i	2 ⋅ i 1 + i
	2

cumSum Accepts as argument either a list or a vector and returns a list or vector whose elements are the cumulative sum of the original argument.

cumSum(List) or cumSum(Vector)

Example:

cumSum([0,1,2,3,4]) returns [0,1,3,6,10]

cyan Used in the Symbolic view of the Geometry app. In the definition of a geometric object, including the statement “display=cyan” specifies that the object defined will be drawn in light blue.

Functions and commands 387