题解 | #求绝对值，平方根，对数，正弦值#

import java.util.Scanner;

public class Main { public static void main(String[] args) { Scanner scanner=new Scanner(System.in); double n = scanner.nextDouble(); System.out.println(Math.abs(n)); System.out.println(Math.sqrt(n)); System.out.println(Math.log(n)); System.out.println(Math.sin(n)); } }