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Let Pn=((1+x)(1-x^2)(1+x^3)(1-x^4))/({(...

Let `P_n=((1+x)(1-x^2)(1+x^3)(1-x^4))/({(1+x)(1-x^2)(1+x^3)(1-x^4)(1-x^(2n))}^2)`.Let Prove that the term independent of x in the expansion of `(x^2+1/x^2+2)^(2n)` is equal to `lim_(x->-1) Pn`.

A

`.^(4n)C_(2n)`

B

`.^(2n)C_(n)`

C

`2.^(4n)C_(2n)`

D

`2.^(4n)C_(2n)`

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The correct Answer is:
A
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