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VB.Net行列计算函数，
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Function Rect(A As Array,L As Integer) As Single '行列式计算L*L
Dim T0 As Single
Dim T1 As Single
Dim T2 As Single
Dim B(0,0) As Single
Dim Num As Single
Dim Cha As Integer
If L > 0 Then
Cha = 0
ReDim B(L - 1,L - 1)
Num = 0
If L = 1 Then
Rect = A(0,0) * A(1,1) - A(0,1) * A(1,0)
Exit Function
End If
For T0 = 0 To L
For T1 = 1 To L
For T2 = 0 To L - 1
If T2 = T0 Then Cha = 1
B(T1 - 1,T2) = A(T1,T2 + Cha)
Next T2
Cha = 0
Next T1
Num = Num + A(0,T0) * Rect(B,L - 1) * (-1) ^ T0
Next T0
Rect = Num
ElseIf L = 0 Then
Rect = A(0,0)
End If
End Function 原文链接：https://www.f2er.com/vb/257071.html
