find-extrema 

Numerically compute the extrema of a given (analytic) function: minima, maxima, and points of inflection

``sh
npm install find-extrema
`

`js
import { findExtremum, rootsNewton } from 'find-extrema';
console.log('minimum of (x - 1)^2:', findExtremum(x => (x - 1) ** 2, 'minimum', {
findRoot: f => rootsNewton(f, Math.random())
}));
``