Question: 2.53. (Sec. 2.5) Show where 13 = I12Iit [Hint: Use Theorem A.3.3 of the Appendix and the fact that I -1 is symmetric.] 0 -1

2.53. (Sec. 2.5) Show

0 -1 11-2 21-11-2 I - 11-2124 22 5- 2111 212 -B'

where 13 = I12Iit [Hint: Use Theorem A.3.3 of the Appendix and the fact that I -1 is symmetric.]

0 -1 11-2 21-11-2 I - 11-2124 22 5- 2111 212 -B' (1 - 1),

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