求救线性代数,我的答案和标准的不一样,不知道哪里错了,标准答案是0和-2,我是0和2求r的值使行列式的值等于O.大家看我算的对么r-1 1 -1-2 r+2 -21 -1 r+11 -1 r+1-2 r+2 -2r-1 1 1 1 -1 r+10 r 2r0 -r -r^21 -1 r+10
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![求救线性代数,我的答案和标准的不一样,不知道哪里错了,标准答案是0和-2,我是0和2求r的值使行列式的值等于O.大家看我算的对么r-1 1 -1-2 r+2 -21 -1 r+11 -1 r+1-2 r+2 -2r-1 1 1 1 -1 r+10 r 2r0 -r -r^21 -1 r+10](/uploads/image/z/13217355-27-5.jpg?t=%E6%B1%82%E6%95%91%E7%BA%BF%E6%80%A7%E4%BB%A3%E6%95%B0%2C%E6%88%91%E7%9A%84%E7%AD%94%E6%A1%88%E5%92%8C%E6%A0%87%E5%87%86%E7%9A%84%E4%B8%8D%E4%B8%80%E6%A0%B7%2C%E4%B8%8D%E7%9F%A5%E9%81%93%E5%93%AA%E9%87%8C%E9%94%99%E4%BA%86%2C%E6%A0%87%E5%87%86%E7%AD%94%E6%A1%88%E6%98%AF0%E5%92%8C-2%2C%E6%88%91%E6%98%AF0%E5%92%8C2%E6%B1%82r%E7%9A%84%E5%80%BC%E4%BD%BF%E8%A1%8C%E5%88%97%E5%BC%8F%E7%9A%84%E5%80%BC%E7%AD%89%E4%BA%8EO.%E5%A4%A7%E5%AE%B6%E7%9C%8B%E6%88%91%E7%AE%97%E7%9A%84%E5%AF%B9%E4%B9%88r-1+1+-1-2+r%2B2+-21+-1+r%2B11+-1+r%2B1-2+r%2B2+-2r-1+1+1+1+-1+r%2B10+r+2r0+-r+-r%5E21+-1+r%2B10)
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