矩阵任意交换2行(列）位置,矩阵前面加符号? 是负号,不是符号.
不用变符号的.对于矩阵,任意交换2行或2列的位置属于初等变换,不用变符号.但是,如果是行列式,就要变符号了
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绛旓細涓涓ぇ鑷寸殑鍘熷舰 swapmatrix(int * a; int * b; int num){ for (i = 0; i < num; i++){ nTmp = *(a+i);(a+i) = *(b+i);(b+i) = nTmp;} }
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绛旓細鍙互銆傛瘮濡浜ゆ崲i,j涓よ锛鍙互鍒嗗洓姝ワ紝鍋囧畾A(i)=x锛孉(j)=y锛岄偅涔 1. A(j) := A(j)-A(i) = y-x 2. A(i) := A(i)+A(j) = y 3. A(j) := A(j)-A(i) = -x 4. A(j) := -A(j) = x
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绛旓細鎴戜細銆備絾鏄兘绛夋垜涓涓嬪悧锛熸垜闇瑕佺偣鏃堕棿鏁蹭唬鐮 Dim arr(5, 5) As Integer Private Sub Command1_Click()Dim tem As Integer, tem1 As Integer, tem2 As Integer, i As Integer, j As Integer tem1 = Text1.Text tem2 = Text2.Text If Option1.Value = True Then For i = 0 To 5...
绛旓細鍒濈瓑琛屽彉鎹㈣鍒欐湁鍒濈瓑鍒楀彉鎹佸垵绛夊彉鎹1銆佸垵绛夊垪鍙樻崲 鍚屾牱鍦帮紝瀹氫箟鍒濈瓑鍒楀彉鎹紝鍗筹細锛1锛変互P涓竴涓潪闆剁殑鏁颁箻鐭╅樀鐨勬煇涓鍒椼傦紙2锛夋妸鐭╅樀鐨勬煇涓鍒楃殑c鍊嶅姞鍒板彟涓鍒楋紝杩欓噷c鏄疨涓殑浠绘剰涓涓暟銆傦紙3锛浜掓崲鐭╅樀涓涓ゅ垪鐨浣嶇疆銆2銆佸垵绛夊彉鎹 锛1锛夋崲琛屽彉鎹細浜ゆ崲涓よ锛堝垪锛銆傦紙2锛夊嶆硶鍙樻崲锛氬皢...
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绛旓細鐭╅樀鎹㈣鏄璇ョ煩闃佃繘琛屽垵绛夎鍙樻崲锛屾槸涓嶄細鏀瑰彉绗﹀彿鐨勩傚垵绛夊垪鍙樻崲锛屽嵆锛1銆佷互P涓竴涓潪闆剁殑鏁颁箻鐭╅樀鐨勬煇涓鍒 2銆佹妸鐭╅樀鐨勬煇涓鍒楃殑c鍊嶅姞鍒板彟涓鍒楋紝杩欓噷c鏄疨涓殑浠绘剰涓涓暟 3銆浜掓崲鐭╅樀涓涓ゅ垪鐨浣嶇疆 鐭╅樀鐨勫垵绛夎鍙樻崲鏄寚涓嬪垪3绉嶅彉鎹細1銆佷互P涓竴涓潪闆剁殑鏁颁箻鐭╅樀鐨勬煇涓琛 2銆佹妸鐭╅樀鐨勬煇...
