Question

agt azt1 If a = 3- i and a, = 3 + 2i, find the value of la, azt
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Answer 1

Answer:

Correct option is D)

AAT=⎣⎢⎢⎡12a2122−2b⎦⎥⎥⎤⎣⎢⎢⎡12221−2a2b⎦⎥⎥⎤=⎣⎢⎢⎡90a+2b+4092a+2−2ba+2b+42a+2−2ba2+4+b2⎦⎥⎥⎤

Now using given condition, AAT=9I

⇒⎣⎢⎢⎡90a+2b+4092a+2−2ba+2b+42a+2−2ba2+