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41 27. Let A =1 313B-9.cShow that (i) A() = (ABC112(ii) (A - BC = AC - BC (iii) (A - B)' = A - B"cos e08. If A=sin e0B=then show that A + B = 1.0cos0sin 0cos esin9. If A =sine coseprove that AA' = 1.5 -410. Verify that A = I when A=-56a11. If A=6and I =dshow that A - (a + d)A = (bc -- ad)I,C0 175 2 912. If A=B = 11 2 82 verify that (AB)' = B^ AT-15 |
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