astsa (version 1.12)

polyMul: Multiplication of Two Polynomials

Description

Multiplication of two polynomials.

Usage

polyMul(p, q)

Arguments

p

coefficients of first polynomial

q

coefficients of second polynomial

Value

coefficients of the product in order of power

Details

inputs are vectors of coefficients in order of power \(ax^0 + bx^1 + cx^2 + ...\)

References

based on code from the polymatrix package https://github.com/namezys/polymatrix

Examples

# NOT RUN {
a = 1:3  # 1 + 2x + 3x^2
b = 1:2  # 1 + 2x
polyMul(a, b) 
# [1] 1 4 7 6
# 1 + 4x + 7x^2 + 6x^3
# }