package eµÄx´Î·½;
public class power{

public static int factorial(int n){
		int factorial=1;
		int counter=1;
		while (counter<1+n){
			factorial*=counter+1;
			counter++;
		}
		return factorial;
	}	
public static double ex(int n,int x){
	double ex=1.0;
	int counter=1;
	while (counter<=n){
		ex+=(double)Math.pow(x,counter)/factorial(counter);
		counter++;
	}
	return ex;
}	



}