1) Determinant 2) Inverse Matrix 3) Gaussian Elimination 4) Iterative technique and calculate using three method to find x , y, z method: cramer's rule, gaussian elimination and inverse matrix.
#include <iostream> #include <vector> # GaussianElimination std::vector<std::vector<float>> GaussianElimination(std::vector<std::vector<float>> matrix) { int rows = matrix.size(); int cols = matrix[0].size(); for (int i = 0; i < rows; i++) { float coefficient1 = matrix[i][i]; for (int j = 0; j < cols; j++) { matrix[i][j] /= coefficient1; } for (int j = 0; j < rows; j++) { if (j == i) continue; float coefficient2 = matrix[j][i]; for (int k = 0; k < cols; k++) { matrix[j][k] -= coefficient2 * matrix[i][k]; } } } return matrix; } void PrintMatrix(std::vector<std::vector<float>> matrix) { for (int i = 0; i < matrix.size(); i++) { for (int j = 0; j < matrix[0].size(); j++) { std::cout.width(5); std::cout << matrix[i][j] << " "; } std::cout << std::endl; } } void PrintSE(std::vector<