Q. The maximum value ofy = [(x-3)^2 + (x^2-2)^2]^1/2 – [x^2 + (x^2-1)^2]^1/2A) 3B) (10)^1/2C)2(5)^1/2D) None of these

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Sum of series 2[n/2] ! [n/2]!/ n! [2Co-2C2+3C2....+[-1]^n[n+1]2Cn] where n is an even positive integer. Kindly provide solution of this question and how to generalise this. How do we know that which expansion will give this?

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