lab.methods

lab.cpp

#include <iostream>
#include <cmath>

double firstBlock(double x)
{
	double result = sqrt(abs(pow(x, 3) - 1)) - 7 * cos(cbrt(pow(x, 4) + 4));
	return result;
}

void secondBlock(double x, double y)
{
	int radius = 2;
	//if (pow((x - 0), 2) + pow((y - 0), 2) < pow(radius, 2)) //есть ли точка в круге с центром 0;0 и радиусом radius
	if (y <= 2 && y >= -2 && pow(x, 2) + pow(y, 2) <= pow(radius, 2))
		std::cout << "YES";
	else
		std::cout << "NO";


}

void thirdBlock()
{
	int a = 100;
	double dB = 0.001;
	float fB = 0.001;
	std::cout << "A = " << a << "\nB = " << fB;

	float floatResult = (pow(a + fB, 3) - pow(a, 3)) / (pow(fB, 3) + 3 * a * pow(fB, 2) + 3 * pow(a, 2) * fB);
	double doubleResult = (pow(a + dB, 3) - pow(a, 3)) / (pow(dB, 3) + 3 * a * pow(dB, 2) + 3 * pow(a, 2) * dB);

	std::cout << "\nFloat = " << floatResult;
	std::cout << "\nDouble = " << doubleResult;
	//return std::make_pair(floatResult, doubleResult);
}

void main()
{
	double x = 0, y = 0;

	std::cout << "Please enter X = " && std::cin >> x;
	std::cout << "Please enter Y = " && std::cin >> y;

	std::cout << "\nBlock 8.1 = " << firstBlock(x);
	std::cout << "\nBlock 8.2 = ";
	secondBlock(x, y);
	std::cout << "\nBlock 8.3: \n";
	thirdBlock();

	system("pause");
}

https://ideone.com/zWzboX