HP Prime Graphing NW280AAABA manual CoeffPoly, Var, Integer, DivisPoly or divisPoly1, Poly2,…

Coefficients Given a polynomial in x, returns a vector containing the coefficients. If the polynomial is in a variable other than x, then declare the variable as the second argument. With an integer as the optional third argument, returns the coefficient of the polynomial whose degree matches the integer.

coeff(Poly, [Var], [Integer])

Examples:

coeff(x^2-2) returns [1 0 -2]

coeff(y^2-2, y, 1) returns 0

Divisors Given a polynomial, returns a vector containing the divisors of the polynomial.

divis(Poly) or divis({Poly1, Poly2,…})

Example:

divis(x^2-1) returns [1 -1+x 1+x (-1+x)*(1+x)]

Factor List Returns a vector containing the prime factors of a polynomial or a list of polynomials, with each factor followed by its multiplicity.

factors(Poly) or factors({Poly1, Poly2,…})

Example:

factors(x^4-1) returns [x-1 1 x+1 1 x2+1 1]

GCD Returns the greatest common divisor of two or more polynomials.

gcd(Poly1,Poly2...)

Example:

gcd(x^4-1, x^2-1) returns x^2-1

LCM Returns the least common multiple of two or more polynomials.

lcm(Poly1, Poly2,…)

Example:

lcm(x^2-2*x+1,x^3-1) gives (x-1)*(x^3-1)

340 Functions and commands