HP Prime Graphing NW280AAABA manual DegreePoly, FactorxnPoly, ContentPoly,Var, SturmabPoly,Var,a,b

Degree Returns the degree of a polynomial.

degree(Poly)

Example:

degree(x^3+x) gives 3

Factor by Degree For a given polynomial in x of degree n, factors out xn and returns the resulting product.

factor_xn(Poly)

Example:

factor_xn(x^4-1) gives x^4*(1-x^-4)

Coef. GCD Returns the greatest common divisor (GCD) of the coefficients of a polynomial.

content(Poly,[Var])

Example:

content(2*x^2+10*x+6) gives 2

Zero Count If a and b are real, this returns the number of sign changes in the specified polynomial in the interval [a,b]. If a or b are non- real, it returns the number of complex roots in the rectangle bounded by a and b. If Var is omitted, it is assumed to be x.

sturmab(Poly[,Var],a,b)

Examples:

sturmab(x^2*(x^3+2),-2,0) returns 1

sturmab(n^3-1,n,-2-i,5+3i) returns 3

Chinese Given a matrix whose 2 rows each contain the coefficients of Remainder a polynomial, returns the Chinese remainder of the

polynomials, also written as a matrix.

chinrem([LstExpr,LstExpr],[LstExpr,

LstExpr])

Example:

		⎛	1 2 0			1 1 0		⎞
chinrem		⎜			,			⎟	returns
		⎜	1 0 1			1 1 1		⎟
		⎝						⎠
[[2	2	1]		[1		1	2		1	1]]

Functions and commands 343