HP Prime Graphing Wireless Calculator Instrukcja Użytkownika Pobierz pdf (Strona 429)

100

101

lcm(Poly1, Poly2,…)

Example:

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

Polynomial – Create

Poly to Coef

Given a polynomial, returns a vector containing the coeicients of the polynomial. With a variable as second

argument, returns the coeicients of a polynomial with respect to the variable. With a list of variables as the

second argument, returns the internal format of the polynomial.

symb2poly(Expr,[Var]) or symb2poly(Expr, {Var1, Var2,…})

Example:

symb2poly(x*3+2.1) returns [3 2.1]

Coef to Poly

With one vector as argument, returns a polynomial in x with coeicients (in decreasing order) obtained from

the argument vector. With a variable as second argument, returns a similar polynomial in that variable.

poly2symb(Vector, [Var]))

Example:

poly2symb([1,2,3],x) returns (x+2)*x+3

Roots to Coef

Returns a vector containing the coeicients (in decreasing order) of the univariate polynomial whose roots

are specied in the argument vector.

pcoef(List)

Example:

pcoeff({1,0,0,0,1}) returns [1 -2 1 0 0 0]

Roots to Poly

Takes as argument a vector. The vector contains each root or pole of a rational function. Each root or pole is

followed by its order, with poles having negative order. Returns the rational function in x that has the roots

and poles (with their orders) specied in the argument vector.

fcoeff(Vector) where Vector has the form [Root1, Order1, Root2, Order2, …])

Example:

fcoeff([1,2,0,1,3,-1]) returns (x-1)^2*x*(x-3)^- 1

Random

Returns a vector of the coeicients of a polynomial of degree Integer and where the coeicients are

random integers in the range –99 through 99 with uniform distribution or in an interval

specied by

Interval. Use with poly2symbol to create a random polynomial in any variable.

randpoly(Integer, Interval, [Dist]), where Interval is of the form Real1..Real2.

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