deflate

▸ function deflate (p: number[], root: number): number[]

Defined in roots/naive/deflate.ts:24

Deflates the given polynomial approximately by removing a factor (x - r), where r is a root of the polynomial.

• non-exact: the deflation is done in double precision - it is not possible to deflate a root exactly in most cases and round-off will thus occur - use only if approximate deflation is acceptable

example

// The polynomial x^3 - 5x^2 + 8x - 4 has a root at 1 and a double root at 2

deflate([1, -5, 8, -4], 2); //=> [1, -3, 2]

deflate([1, -3, 2], 2); //=> [1,-1]

deflate([1, -1], 1); //=> [1]

Parameters:

Name	Type	Description
p	number[]	a polynomial with coefficients given densely as an array of double floating point numbers from highest to lowest power, e.g. [5,-3,0] represents the polynomial 5x^2 - 3x
root	number	a root of the polynomial.

Returns: number[]