b-num-roots
▸ function bNumRoots
(p: bigint[]): number
Defined in roots/descartes/bigint/b-num-roots.ts:32
Returns the exact number of distinct real roots in the interval (-∞,+∞) of the given polynomial.
- From Wikipedia: "In the case of a non-square-free polynomial, if neither a nor b is a multiple root of p, then V(a) − V(b) is the number of distinct real roots of P".
example
const p = [n1, 1n, -64n, 236n, -240n];
bNumRoots(p); //=> 4
Parameters:
| Name | Type | Description |
|---|---|---|
p | bigint[] | a polynomial with coefficients given densely as an array of bigints from highest to lowest power, e.g. [5n,-3n,0n] represents the polynomial 5x^2 - 3x |
Returns: number