Quiz) 절댓값 구하기

🔓 절댓값 구하기

• Main Class

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {

		
		Scanner scanner = new Scanner(System.in);
		
		System.out.print("x의 값을 입력하세요 : ");
		double x = scanner.nextDouble();
		
		scanner.close();
	
		Absolute absolute = new Absolute(x);
		absolute.mtd_Abs();
	}
	
	
}

• Custom Class

public class Absolute {

	private double x;

	public Absolute(double x) {
		this.x = x;
	};
	
	public void mtd_Abs() {
		//2곱하기 x의 3제곱 표기 : 2*x^3
		
		double res = 2 * Math.pow(this.x, 3) + 3 * Math.pow(this.x, 2) + 4;
		
		res = Math.abs(res);
		
		System.out.printf("res : %.2f", res);
	}
}

📌 Math.abs(); : 절대값 반환