kStatistics (version 2.0)

pPoly: Product of Polynomials

Description

The function returns the product between polynomials without constant term.

Usage

pPoly( L )

Arguments

L

lists of coefficients of the polynomials

Value

vector

coefficients of the polynomial output of the product

Examples

# NOT RUN {
# c(1,-3) are the coefficients of (x-3x^2), c(2) is the coefficient of 2x
# generate c(0, 2,-6), coefficients of 2x^2-6x^3 =(x-3x^2)*(2x) 
pPoly(list(c(1,-3), c(2)))

# c(0,3,-2) are the coefficients of 3x^2-2x^3, c(0,2,-1) are the coefficients of (2x^2-x^3)
# generate c(0,0,0,6,-7,2), coefficients of 6x^4-7x^5+2x^6=(3x^2-2x^3)*(2x^2-x^3)
pPoly(list(c(0,3,-2),c(0,2,-1)))                       

# }