series and factorial
Mon Oct 30 2023 04:53:50 GMT+0000 (Coordinated Universal Time)
Saved by
@yolobotoffender
/*Write a program in C++ to display the sum of the series [ 1+x+x^2/2!+x^3/3!+....].
Sample Output:
Input the value of x: 3
Input number of terms: 5
The sum is : 16.375 */
#include<iostream>
#include<iomanip>
#include<cmath>
using namespace std;
int main(){
int num,fact=1;
double sum1=0.0,sum2=0.0,ans,x;
cout<<"enter the value of x: "<<endl;
cin>>x;
cout<<"enter the value of terms: "<<endl;
cin>>num;
for(int i=1;i<=num-1;i++){
for(int j=1;j<=i;j++ ){
sum1=sum1+x;
x=pow(x,i);
fact = fact*i;
sum2 = sum2+fact;
}
}
ans = sum1/sum2;
cout<<ans<<endl;
return 0;
}
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