export type LineFunction = (x: number) => number;
export interface ParabolaRegressionOptions {
    /**
     * Initial parameter values.
     *
     * @default [0,0,0]
     */
    initialValues?: number[];
}
/**
 * Get the parabola function.
 *
 * @param root0 - Parameters.
 * @param root0."0"
 * @param root0."1"
 * @param root0."2"
 * @returns The parabola.
 */
export declare function parabola([a, b, c]: number[]): LineFunction;
/**
 * Compute linear regression parameters for the given data.
 *
 * @param source - Source data.
 * @param destination - Destination data.
 * @param options
 * @returns Line parameters.
 */
export declare function parabolaRegression(source: number[], destination: number[], options?: ParabolaRegressionOptions): number[];
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