Solucionario-de-algebra-lineal-Kolman-octava-edicion.pdf

# T16 show that if a is n n with a skew symmetric a t a

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32 CHAPTER 3. DETERMINANTS A - 1 (which exists, A being nonsingular), we obtain A - 1 ( AB ) = A - 1 I n and B = A - 1 . Hence BA = A - 1 A = I n . (b) Similarly. 2) Exercise T3 . Show that if A is symmetric, then adj A is also symmetric. Solution. Take an arbitrary cofactor A ij = ( - 1) i + j det( M ij ) where M ij is the submatrix of A obtained by deleting the i -th row and j -th column.

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• Fall '16
• jjaa
• Diagonal matrix, Det, Solution.

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