用matlab求矩阵的逆矩阵(matlab逆矩阵怎么输入)

在C语言中实现矩阵求逆可以使用高斯-约旦消元法，该算法在数学中广泛使用，并且在计算机科学中得到了广泛应用。

下面是C语言中实现高斯-约旦消元法的代码示例：

#include #define MAX_SIZE 100int n;double a[MAX_SIZE][MAX_SIZE], b[MAX_SIZE][MAX_SIZE], x[MAX_SIZE];void input_matrix() {    int i, j;    printf(\"Enter the dimension of the matrix: \");    scanf(\"%d\", &n);    printf(\"Enter the elements of the matrix: \\n\");    for (i = 0; i < n; i++) {        for (j = 0; j < n; j++) {            scanf(\"%lf\", &a[i][j]);        }    }}void make_identity_matrix() {    int i, j;    for (i = 0; i < n; i++) {        for (j = 0; j < n; j++) {            b[i][j] = (i == j) ? 1 : 0;        }    }}void gaussian_elimination() {    int i, j, k;    double factor;    for (k = 0; k < n; k++) {        for (i = k + 1; i < n; i++) {            factor = a[i][k] / a[k][k];            for (j = k; j < n; j++) {                a[i][j] -= factor * a[k][j];                b[i][j] -= factor * b[k][j];            }        }    }}void back_substitution() {    int i, j;    double sum;    for (i = n - 1; i >= 0; i--) {        sum = 0;        for (j = i + 1; j < n; j++) {            sum += a[i][j] * x[j];        }        x[i] = (b[i][n] - sum) / a[i][i];    }}void print_result() {    int i, j;    printf(\"The inverse of the matrix is: \\n\");    for (i = 0; i < n; i++) {        for (j = 0; j < n; j++) {            printf(\"%lf \", b[i][j]);        }        printf(\"\\n\");    }}int main() {    input_matrix();    make_identity_matrix();    gaussian_elimination();    back_subst    back_substitution();    print_result();    return 0;}

说明：这段代码实现了高斯-约旦消元法，用于求解矩阵的逆。在输入矩阵后，将单位矩阵作为初始的结果矩阵，然后通过高斯消元的过程将结果矩阵变换为矩阵的逆。最后，通过回带消元，求得矩阵的逆并输出。