HP NW280AAABA Uživatelský manuál stáhnout pdf (Strana 346)

100

101

340 Functions and commands

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 x

+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)

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