4812. Function

Suppose the function f(x) is defined as

Compute the value of f(x) for a given x.

Input. Each line contains one double value x (x ≥ 1).

Output. For each value x print on a separate line the value f(x) with 6 digits after the decimal point.

Sample input	Sample output
1 2.3 2.56 7.123456	10.731685 31.926086 40.762019 3725.231017

SOLUTION

mathematics

Algorithm analysis

For each real value x, compute the value of the function f(x). Read the input data till the end of file.

Algorithm realization

Read the value of x. Compute the value of the function and print the answer.

while(scanf("%lf",&x) == 1)

{

y = sin(x) + sqrt(log(3*x) / log(4.0)) + ceil(3*exp(x));

printf("%.6lf\n",y);

}

Java realization

import java.util.*;

public class Main

{

public static void main(String[] args)

{

Scanner con = new Scanner(System.in);

while(con.hasNextDouble())

{

double x = con.nextDouble();

double y = Math.sin(x) + Math.sqrt(Math.log(3*x) / Math.log(4.0)) + Math.ceil(3*Math.exp(x));

System.out.printf("%.6f\n",y);

}

con.close();

}

}