How to dispaly x+x^2+x^3+.....+x^n Without power (pow) function??

Question

please solve this one please?? with c++

Answer 1

You can use only addition, multiplication and for loops. Using mathematics, we can write x+x^2+x^3+...+x^n as x(1+x(1+x(1+x(...(1+x(1+x))...)))). You can program it like below.

double x, res=1;
int n,i;
cin>>n;
cin>>x;
for(i=0;i<n-1;i++){
res*=x;
res+=1;
}
res*=x;
cout<<res;

Answer 2

https://code.sololearn.com/cNpH9fYRgs72/?ref=app