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ABCD is a square and E is mid point of A...

ABCD is a square and E is mid point of AD. If area of square is given by `A_(1)`.

A

maximum value of (abxy)is 9

B

maximum value of (abxy)is 36

C

maximum value of (ax+by) is 6

D

minimum value of (ax+by) is -6

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A, C, D
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