题目
用行列式性质证明:(1) _(1)+k(b)_(1)-|||-_(1)+(c)_(1)-|||-_(2)+(c)_(2)-|||-_(2)+k(b)_(2)-|||-_(1)+(c)_(1) _(1)-|||-_(2)+(c)_(2) C2-|||-_(3)+(c)_(3) _(3)-|||-_(3)+k(b)_(3)=_(1)+k(b)_(1)-|||-_(1)+(c)_(1)-|||-_(2)+(c)_(2)-|||-_(2)+k(b)_(2)-|||-_(1)+(c)_(1) _(1)-|||-_(2)+(c)_(2) C2-|||-_(3)+(c)_(3) _(3)-|||-_(3)+k(b)_(3).证明: _(1)+k(b)_(1)-|||-_(1)+(c)_(1)-|||-_(2)+(c)_(2)-|||-_(2)+k(b)_(2)-|||-_(1)+(c)_(1) _(1)-|||-_(2)+(c)_(2) C2-|||-_(3)+(c)_(3) _(3)-|||-_(3)+k(b)_(3)_(1)+k(b)_(1)-|||-_(1)+(c)_(1)-|||-_(2)+(c)_(2)-|||-_(2)+k(b)_(2)-|||-_(1)+(c)_(1) _(1)-|||-_(2)+(c)_(2) C2-|||-_(3)+(c)_(3) _(3)-|||-_(3)+k(b)_(3)_(1)+k(b)_(1)-|||-_(1)+(c)_(1)-|||-_(2)+(c)_(2)-|||-_(2)+k(b)_(2)-|||-_(1)+(c)_(1) _(1)-|||-_(2)+(c)_(2) C2-|||-_(3)+(c)_(3) _(3)-|||-_(3)+k(b)_(3).(2) _(1)+k(b)_(1)-|||-_(1)+(c)_(1)-|||-_(2)+(c)_(2)-|||-_(2)+k(b)_(2)-|||-_(1)+(c)_(1) _(1)-|||-_(2)+(c)_(2) C2-|||-_(3)+(c)_(3) _(3)-|||-_(3)+k(b)_(3)=_(1)+k(b)_(1)-|||-_(1)+(c)_(1)-|||-_(2)+(c)_(2)-|||-_(2)+k(b)_(2)-|||-_(1)+(c)_(1) _(1)-|||-_(2)+(c)_(2) C2-|||-_(3)+(c)_(3) _(3)-|||-_(3)+k(b)_(3).证明: _(1)+k(b)_(1)-|||-_(1)+(c)_(1)-|||-_(2)+(c)_(2)-|||-_(2)+k(b)_(2)-|||-_(1)+(c)_(1) _(1)-|||-_(2)+(c)_(2) C2-|||-_(3)+(c)_(3) _(3)-|||-_(3)+k(b)_(3)_(1)+k(b)_(1)-|||-_(1)+(c)_(1)-|||-_(2)+(c)_(2)-|||-_(2)+k(b)_(2)-|||-_(1)+(c)_(1) _(1)-|||-_(2)+(c)_(2) C2-|||-_(3)+(c)_(3) _(3)-|||-_(3)+k(b)_(3)_(1)+k(b)_(1)-|||-_(1)+(c)_(1)-|||-_(2)+(c)_(2)-|||-_(2)+k(b)_(2)-|||-_(1)+(c)_(1) _(1)-|||-_(2)+(c)_(2) C2-|||-_(3)+(c)_(3) _(3)-|||-_(3)+k(b)_(3)_(1)+k(b)_(1)-|||-_(1)+(c)_(1)-|||-_(2)+(c)_(2)-|||-_(2)+k(b)_(2)-|||-_(1)+(c)_(1) _(1)-|||-_(2)+(c)_(2) C2-|||-_(3)+(c)_(3) _(3)-|||-_(3)+k(b)_(3)_(1)+k(b)_(1)-|||-_(1)+(c)_(1)-|||-_(2)+(c)_(2)-|||-_(2)+k(b)_(2)-|||-_(1)+(c)_(1) _(1)-|||-_(2)+(c)_(2) C2-|||-_(3)+(c)_(3) _(3)-|||-_(3)+k(b)_(3)_(1)+k(b)_(1)-|||-_(1)+(c)_(1)-|||-_(2)+(c)_(2)-|||-_(2)+k(b)_(2)-|||-_(1)+(c)_(1) _(1)-|||-_(2)+(c)_(2) C2-|||-_(3)+(c)_(3) _(3)-|||-_(3)+k(b)_(3).(3) _(1)+k(b)_(1)-|||-_(1)+(c)_(1)-|||-_(2)+(c)_(2)-|||-_(2)+k(b)_(2)-|||-_(1)+(c)_(1) _(1)-|||-_(2)+(c)_(2) C2-|||-_(3)+(c)_(3) _(3)-|||-_(3)+k(b)_(3)_(1)+k(b)_(1)-|||-_(1)+(c)_(1)-|||-_(2)+(c)_(2)-|||-_(2)+k(b)_(2)-|||-_(1)+(c)_(1) _(1)-|||-_(2)+(c)_(2) C2-|||-_(3)+(c)_(3) _(3)-|||-_(3)+k(b)_(3).证明: _(1)+k(b)_(1)-|||-_(1)+(c)_(1)-|||-_(2)+(c)_(2)-|||-_(2)+k(b)_(2)-|||-_(1)+(c)_(1) _(1)-|||-_(2)+(c)_(2) C2-|||-_(3)+(c)_(3) _(3)-|||-_(3)+k(b)_(3)=_(1)+k(b)_(1)-|||-_(1)+(c)_(1)-|||-_(2)+(c)_(2)-|||-_(2)+k(b)_(2)-|||-_(1)+(c)_(1) _(1)-|||-_(2)+(c)_(2) C2-|||-_(3)+(c)_(3) _(3)-|||-_(3)+k(b)_(3)_(1)+k(b)_(1)-|||-_(1)+(c)_(1)-|||-_(2)+(c)_(2)-|||-_(2)+k(b)_(2)-|||-_(1)+(c)_(1) _(1)-|||-_(2)+(c)_(2) C2-|||-_(3)+(c)_(3) _(3)-|||-_(3)+k(b)_(3) _(1)+k(b)_(1)-|||-_(1)+(c)_(1)-|||-_(2)+(c)_(2)-|||-_(2)+k(b)_(2)-|||-_(1)+(c)_(1) _(1)-|||-_(2)+(c)_(2) C2-|||-_(3)+(c)_(3) _(3)-|||-_(3)+k(b)_(3)_(1)+k(b)_(1)-|||-_(1)+(c)_(1)-|||-_(2)+(c)_(2)-|||-_(2)+k(b)_(2)-|||-_(1)+(c)_(1) _(1)-|||-_(2)+(c)_(2) C2-|||-_(3)+(c)_(3) _(3)-|||-_(3)+k(b)_(3)_(1)+k(b)_(1)-|||-_(1)+(c)_(1)-|||-_(2)+(c)_(2)-|||-_(2)+k(b)_(2)-|||-_(1)+(c)_(1) _(1)-|||-_(2)+(c)_(2) C2-|||-_(3)+(c)_(3) _(3)-|||-_(3)+k(b)_(3)_(1)+k(b)_(1)-|||-_(1)+(c)_(1)-|||-_(2)+(c)_(2)-|||-_(2)+k(b)_(2)-|||-_(1)+(c)_(1) _(1)-|||-_(2)+(c)_(2) C2-|||-_(3)+(c)_(3) _(3)-|||-_(3)+k(b)_(3)_(1)+k(b)_(1)-|||-_(1)+(c)_(1)-|||-_(2)+(c)_(2)-|||-_(2)+k(b)_(2)-|||-_(1)+(c)_(1) _(1)-|||-_(2)+(c)_(2) C2-|||-_(3)+(c)_(3) _(3)-|||-_(3)+k(b)_(3)_(1)+k(b)_(1)-|||-_(1)+(c)_(1)-|||-_(2)+(c)_(2)-|||-_(2)+k(b)_(2)-|||-_(1)+(c)_(1) _(1)-|||-_(2)+(c)_(2) C2-|||-_(3)+(c)_(3) _(3)-|||-_(3)+k(b)_(3)_(1)+k(b)_(1)-|||-_(1)+(c)_(1)-|||-_(2)+(c)_(2)-|||-_(2)+k(b)_(2)-|||-_(1)+(c)_(1) _(1)-|||-_(2)+(c)_(2) C2-|||-_(3)+(c)_(3) _(3)-|||-_(3)+k(b)_(3)_(1)+k(b)_(1)-|||-_(1)+(c)_(1)-|||-_(2)+(c)_(2)-|||-_(2)+k(b)_(2)-|||-_(1)+(c)_(1) _(1)-|||-_(2)+(c)_(2) C2-|||-_(3)+(c)_(3) _(3)-|||-_(3)+k(b)_(3).(4) _(1)+k(b)_(1)-|||-_(1)+(c)_(1)-|||-_(2)+(c)_(2)-|||-_(2)+k(b)_(2)-|||-_(1)+(c)_(1) _(1)-|||-_(2)+(c)_(2) C2-|||-_(3)+(c)_(3) _(3)-|||-_(3)+k(b)_(3)
用行列式性质证明:
(1)
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(2)
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题目解答
答案
解: 由






