Question

Create a process that will calculate the series 1 + x + x2 + x3 + x4 .......... + xn where x is a floating point number and n is a positive number. you process should be designed so exponentiation (or the pow function in c++) is not needed.

Answer 1

Assumptions

1. n is an integer.

2. Language is c++

double expr(double x, int n)

{

double sum = 0.0;

double power = 1.0; // Will have the value x^y where y ranges from 0 to n

int i;

for(i=0; i <= n; ++i) {

sum += power;

power *= x;

}

return sum;

}