Imágenes de páginas
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[blocks in formation]

a

0

с b a

b

1 c2 0

1 b2 a2 0

=- −(a+b+c)(−a+ + c) (− b + c + a) (−c+a+b).

1.0 c2 b2

a2

[ocr errors]
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[blocks in formation]
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= (a + b + c + d) (a + b − c − d) (a + c − b − d) (a + d − b −c).

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[blocks in formation]

23.

Shew that, if any determinant vanishes, the minors of any one row will be proportional to the minors of any other row.

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