#include <iostream>
using namespace std;

double partA(const double& x, const size_t& N)
{
	double summary = x;
	double numerator = 1, denominator = 1;
	double xScale = x;
	int scale = 2;
	for (size_t i = 1; i < N; i++)
	{
		xScale *= -x;
		numerator *= (scale - 1);
		denominator *= scale;
		const double temp = numerator / denominator * xScale;
		summary += temp;
		scale += 2;
	}
	return summary;
}

int main()
{
	return 0;
}