9. Yes
11. Yes
13. No
15. No
17. Yes
19. A−1=⎡⎣⎢⎢12−16013⎤⎦⎥⎥
21. Does not exist
23. A−1=⎡⎣⎢100−82−110−32⎤⎦⎥
25. A−1=⎡⎣⎢1−1211−5−102⎤⎦⎥
27. ⎡⎣⎢1−2−2−1330−4−3⎤⎦⎥
29. A−1=⎡⎣1−32012⎤⎦
31. A−1=[5332]
33. A−1=1b2−a2 [−a−bba], where a2≠b2
35. [213−3][xy]=[−913]
37. ⎡⎣⎢321213132⎤⎦⎥⎡⎣⎢xyz⎤⎦⎥=⎡⎣⎢879⎤⎦⎥
39. {x2x−+2yy==05
41. ⎧⎩⎨⎪⎪2x15x14x1+++3x27x23x2+−x3x3===−155
43. ⎡⎣⎢12−1231582⎤⎦⎥⎡⎣⎢212−5−1−73−1−21⎤⎦⎥=⎡⎣⎢100010001⎤⎦⎥
45. {(2,−3, 1)}
47.
A−1=⎡⎣⎢⎢⎢⎢⎢3−31−524−3212−112⎤⎦⎥⎥⎥⎥⎥
{(1, 2, 3)}
..................Content has been hidden....................
You can't read the all page of ebook, please click
here login for view all page.