import Big from 'big.js';
declare type Bignumberish = Big | number | string;
interface Options {
    tolerance: Bignumberish;
    maxIterations: number;
    h: Bignumberish;
    verbose: boolean;
}
declare type F = (x: Big) => Big;
export declare function newtonRaphson(f: F, x0: Bignumberish, options?: Partial<Options>, fp?: F): Big | false;
export {};