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p @ q = p^2 - 20 if p > q , q 2 q = p^2 ...

`p @ q = p^2 - 20` if `p > q , q 2 q = p^2 + 20` if `p le q,` then for a = 5 and b = 4 the value of
`[(a @ b) @ (a @ b)] - [(b @ a) @ (b @ a)]` is :

A

416

B

-461

C

-1271

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
C
`[5@4)@(5@4)]-[(4@5)@(4@5)]
= [5 @ 5) - (36@36)] = 45-1316 = -1271
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