Yegorsh’s gists

Yegorsh / cholesky_decomposition.cpp

Last active December 21, 2021 20:55

Cholesky decomposition. Find more at https://yegorsh-public.notion.site/Cholesky-decomposition-01f53b0b091641ba896ddfc3beb9660c

	#include <iostream>
	#include <cmath>
	using namespace std;

	void FillMatrix(double **matrix, const int size){
	for (int i=0; i<size; i++){
	for (int j=0; j<size; j++){
	cout << "a[" << i+1 << "][" << j+1 << "] = ";
	cin >> matrix[i][j];
	}

Yegorsh / LU_decomposition.cpp

Created December 21, 2021 20:53

	#include <iostream>
	using namespace std;

	void FillMatrix(double **matrix, const int size){
	for (int i=0; i<size; i++){
	for (int j=0; j<size; j++){
	matrix[i][j] = rand()%30;
	}
	}
	}

Yegorsh / determinant.cpp

Created December 21, 2021 21:02

	#include <iostream>
	#include <ctime>
	#include <time.h>
	#define INTEGER
	//#define DECIMAL //you'll have to change the type of an array from int to float
	using namespace std;

	#ifdef INTEGER
	void FillMatrix(int **matrix, const int size){
	for (int i=0; i<size; i++){

Yegorsh / cramers_rule.cpp

Created December 21, 2021 21:03

	#include <iostream>
	using namespace std;

	void PrintMatrix(int **matrix, const int size){
	for (int i=0; i<size; i++){
	for (int j=0; j<size+1; j++){
	if (j<size) {
	cout << matrix[i][j] << "*X" << j+1 << " ";
	}
	else{

Yegorsh / gaussian_elimination.cpp

Created December 21, 2021 21:03

	#include <iostream>
	using namespace std;

	void clearMemory(double** matrix, int size){
	for (int i = 0; i < size; i++){
	delete[] matrix[i];
	}
	delete [] matrix;
	}

Yegorsh / bisection_method.cpp

Last active January 5, 2022 21:09

	#include <iostream>
	#include <math.h>
	using namespace std;

	double f(double x){
	return log(x)-3; //use your function
	}

	double BisectionMethod(double Xl, double Xr, double epsilon){
	if (fabs(f(Xl)) < epsilon){

Yegorsh / Newton's_method.cpp

Last active January 5, 2022 21:09

	#include <iostream>
	#include <math.h>
	using namespace std;

	double f(double x){
	return log(x) - 5;
	}

	double rightDerivative (double x, double h){
	double rightDer = (f(x+h) - f(x))/h;

Yegorsh / Secant_method.cpp

Last active January 5, 2022 21:09

	#include <iostream>
	#include <math.h>
	using namespace std;

	double foo(double x){
	return log(x) - 5;
	}

	double SecantMethod(double x0, double x1, const double epsilon){
	double x2;

Yegorsh / 1st_and_2nd_Derivative.cpp

Last active January 5, 2022 21:08

	#include <iostream>
	#include <cmath>
	using namespace std;

	double f(double x){
	return sin(x);
	}

	double rightDerivative (double x, double h){
	double rightDer = (f(x+h) - f(x))/h;

Yegorsh / Integration.cpp

Last active January 5, 2022 21:08

	#include <iostream>
	#include <cmath>
	using namespace std;

	double Function(double x){
	return sin(x);
	}

	double Trapezoid_1 (double a, double b, double N){ //методом трапеций 1
	double Integral = 0, delta_x = (b - a) / N;