zhishu

miyunsuan.txt

@@ -0,0 +1,25 @@
+import java.util.Scanner;
+
+public class duishu {
+	public static void main(String args[]) {
+	double x,k=1,f=1,e,n,a=0;
+	Scanner sc = new Scanner(System.in);
+	x=sc.nextDouble();
+	n=sc.nextDouble();
+    if(n < 0)
+    System.out.println("error");
+    else
+    {
+    for(int i = 1;i <= n;i++)
+    {
+    	
+        a =Math.pow((double)x,(double)i);
+        k = k*i;
+        e = a/k;
+        f += e;
+    }
+    System.out.println((double)f);
+    }
+	}
+
+}