matrix.dll

包含矩阵定义，矩阵输出，矩阵格式化输出，矩阵转置，矩阵相加，矩阵相乘，N阶方阵行列式求值，求逆，求伴随矩阵，求上三角形

命名空间：matrix
定义类：Matrix
方法：
public Matrix(int mm, int nn)
定义矩阵A:
Matrix A=new Matrix(int mm, int nn);

public double read(int i, int j)
获取Aij:
A.read(i,j);

public int write(int i, int j, double val)
将数据b写入Aij:
A.read(i,j,b);


释放矩阵：
public void freeMatrix()
A.freeMatrix();


方法：
//C = A + B
//成功返回1,失败返回-1
public int add(ref Matrix A, ref Matrix B, ref Matrix C)

//C = A - B
//成功返回1,失败返回-1
public int subtract(ref Matrix A, ref Matrix B, ref Matrix C)

//C = A * B
//成功返回1,失败返回-1
public int multiply(ref Matrix A, ref Matrix B, ref Matrix C)

//行列式的值,只能计算2 * 2,3 * 3
//失败返回-31415,成功返回值
public double det(ref Matrix A)

//求转置矩阵,B = AT
//成功返回1,失败返回-1
public int transpos(ref Matrix A, ref Matrix B)

//求逆矩阵,B = A^(-1)
//成功返回1,失败返回-1
public int inverse(ref Matrix A, ref Matrix B)

//矩阵输出//
public string Out(ref Matrix A)

//矩阵格式化输出//
public string Outt(ref Matrix A, string format)

//矩阵一维数组赋值//
public void Fuzhi( ref Matrix A , double[] arr)

//方阵行列式值//
public double Det(ref Matrix A)

//矩阵的伴随矩阵//
public void Accompany(ref Matrix A, ref Matrix B)

//伴随矩阵法求矩阵的逆//
public void Inverse(ref Matrix A, ref Matrix B)

//矩阵相等//
public void Equal(ref Matrix A, ref Matrix B)


//C = A + B
//成功返回1,失败返回-1
A.add(ref Matrix A, ref Matrix B, ref Matrix C);
//C = A - B
//成功返回1,失败返回-1
A.subtract(ref Matrix A, ref Matrix B, ref Matrix C)

//C = A * B
//成功返回1,失败返回-1
A.multiply(ref Matrix A, ref Matrix B, ref Matrix C)

//行列式的值,只能计算2 * 2,3 * 3
//失败返回-31415,成功返回值
A.det(ref Matrix A)

//求转置矩阵,B = AT
//成功返回1,失败返回-1
A.transpos(ref Matrix A, ref Matrix B)

//求逆矩阵,B = A^(-1)
//成功返回1,失败返回-1
A.inverse(ref Matrix A, ref Matrix B)

//矩阵输出//
A.Out(ref Matrix A)
//矩阵6位小数输出//
A.Outt(ref Matrix A)

//矩阵一维数组赋值//
A.Fuzhi( ref Matrix A , double[] arr)

//方阵行列式值//
A.Det(ref Matrix A)

//矩阵格式化输出//
public string Outt(ref Matrix A, string format)
A.Outt(ref Matrix A, string format);

//矩阵的伴随矩阵//
public void Accompany(ref Matrix A, ref Matrix B)
A.Accompany(ref Matrix A, ref Matrix B);

//伴随矩阵法求矩阵的逆//
public void Inverse(ref Matrix A, ref Matrix B)
A.Inverse(ref Matrix A, ref Matrix B);

//矩阵相等//
public void Equal(ref Matrix A, ref Matrix B)
A.Equal(ref Matrix A, ref Matrix B);

格式说明符说明 示例 输出

C 货币 2.5.ToString("C") ￥2.50

D 十进制数 25.ToString("D5") 00025

E 科学型 25000.ToString("E") 2.500000E+005

F 固定点 25.ToString("F2") 25.00

G 常规 2.5.ToString("G") 2.5

N 数字 2500000.ToString("N") 2,500,000.00

X 十六进制 255.ToString("X") FF