?? d1r12.txt
字號:
Private Sub Command1_Click()
'program D1R12
'Driver program for routine SSOR
N = 5
Dim A(5, 5), B(5), Q(5, 5), C(5, 5), R(5), X(5)
EPS = 0.0000001
'松弛因子
OM = 1.3
'輸入已知的方程組的系數矩陣
A(1, 1) = 1#: A(1, 2) = 1#: A(1, 3) = 0#: A(1, 4) = 0#: A(1, 5) = 0#
A(2, 1) = 1#: A(2, 2) = 2#: A(2, 3) = 1#: A(2, 4) = 0#: A(2, 5) = 0#
A(3, 1) = 0#: A(3, 2) = 1#: A(3, 3) = 3#: A(3, 4) = 1#: A(3, 5) = 0#
A(4, 1) = 0#: A(4, 2) = 0#: A(4, 3) = 1#: A(4, 4) = 4#: A(4, 5) = 1#
A(5, 1) = 0#: A(5, 2) = 0#: A(5, 3) = 0#: A(5, 4) = 1#: A(5, 5) = 5#
'輸入已知的方程組的右端向量B
B(1) = 2#
B(2) = 4#
B(3) = 5#
B(4) = 6#
B(5) = 6#
Print
Print Tab(5); "已知的方程組的右端向量"
Print Tab(14); Format$(B(1), "##.##")
Print Tab(14); Format$(B(2), "##.##")
Print Tab(14); Format$(B(3), "##.##")
Print Tab(14); Format$(B(4), "##.##")
Print Tab(14); Format$(B(5), "##.##")
For I = 1 To N
For J = 1 To N
C(I, J) = A(I, J)
Next J
Next I
For I = 1 To N
R(I) = B(I)
X(I) = 0#
Next I
Call SSOR(C(), N, R(), X(), EPS, OM, II)
Print
Print Tab(5); "計算出的方程組的解"
Print Tab(10); Format$(X(1), "#.####E+00")
Print Tab(10); Format$(X(2), "#.####E+00")
Print Tab(10); Format$(X(3), "#.####E+00")
Print Tab(10); Format$(X(4), "#.####E+00")
Print Tab(10); Format$(X(5), "#.####E+00")
'將計算出的解乘以系數矩陣,以驗證計算結果正確
For L = 1 To N
B(L) = 0#
For J = 1 To N
B(L) = B(L) + A(L, J) * X(J)
Next J
Next L
Print
Print Tab(5); "計算出的解乘以系數矩陣的結果"
Print Tab(14); Format$(B(1), "##.##")
Print Tab(14); Format$(B(2), "##.##")
Print Tab(14); Format$(B(3), "##.##")
Print Tab(14); Format$(B(4), "##.##")
Print Tab(14); Format$(B(5), "##.##")
Print
Print Tab(5); "迭代次數="; II
End Sub
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