// 9.1.js
// 2024-09-04
// $Id: 9.1.js 1.1 2024/11/02 14:01:30 s Exp $

const sum = (x, y) => x + y;
const x   = [8e4, 9e4, 10e4, 11e4, 12e4, 13e4, 14e4];
const u   = x => x ** (1 / 4);
const eux = x.map(u).reduce(sum) / x.length;
const c   = eux ** 4;

console.log("9.1.js");
console.log("x ", ...x);
console.log("E[U(x)] ", eux);
console.log("C ", c);
// end