\!\(For[i = 1,
i <= C\_A + 1, \(i++\), \[IndentingNewLine]Which[\[IndentingNewLine]i ==
1, DM[1, 1] = \(-\((C\_B*\[Mu]\_B)\)\);
For[l = 2, l <= C\_A + 1, \(l++\),
DM[1, l] = 0], \[IndentingNewLine]i == \((C\_A + 1)\),
For[l = 1, l <= C\_A - 1, \(l++\), DM[C\_A + 1, l] = 0];
DM[C\_A + 1, C\_A] = C\_A*\[Mu]\_A;
DM[C\_A + 1, C\_A + 1] = \(-\[Mu]\), \[IndentingNewLine]i\ != 1\ && \
i\ != \((C\_A + 1)\), \
For[l = 1, l <= i - 2, \(l++\), DM[i, l] = 0];
DM[i, i - 1] = \((i - 1)\) \[Mu]\_A;
DM[i, i] = \(-\((C\_B*\[Mu]\_B + \((i - 1)\)*\[Mu]\_A)\)\);
For[l = i + 2, l <= C\_A + 1, \(l++\),
DM[i, l] = 0]]]\[IndentingNewLine]
DM = Array[DM, {C\_A + 1, C\_A + 1}]\)
のどこが悪いですか