Hp 39g Graphing Calculator Manual do Utilizador descarregar pdf (Página 150)

Polynomial functions

POLYCOEF

POLYEVAL

POLYFORM

POLYROOT

Polynomials are products of constants {coefficients) and

variables raised to powers {terms).

Polynomial coefficients. Returns the coefficients of the

polynomial with the specified roots.

POLYCOEF {[roots])

Example

To find the polynomial with roots 2, -3, 4, -5:

POLYCOEF ([2,-3,4,-5]) returns [1,2, -25,

-26,120], representing y'*+2y^“25y^-26y+120.

Polynomial evaluation. Evaluates a polynomial with the

specified coefficients for the value of .r.

POLYEVAL { [ coefficients ] , value)

Example

For x^+'h?~25.x^~26x+120:

POLYEVAL ([1,2,-2 5,-26,12 01,8) returns

3432.

Polynomial fonn. Creates a polynomial in variahlel from

expression.

POhYFOBMlexpression.variablel)

Example

POLYFORM( (X+1) ^2 + 1,X) returns X"-2+2*X+2.

Polynomial roots. Returns the roots for the ;jth-order

polynomial with the specified n+\ coefficients.

¥0'hYROO’Y{[coefficients])

Example

For /+2a-3-25y2-26y+120:

POLYROOT([1,2,-25,-26,120]

[2,-3,4,-5].

returns

10-12

Using mathematical functions

1 2 ... 145 146 147 148 149 150 151 152 153 154 155 ... 291 292

Sem comentários

Hp 39g Graphing Calculator Manual do Utilizador Página 150