If f(x)=(lim)(xvecoo)((x^2+a x+1)+x^(2n)...

If `f(x)=(lim)_(xvecoo)((x^2+a x+1)+x^(2n)(2x^2+x+b))/(1+x^(2n))a n d(lim)_(xvec+-1)f(x)` exist, then The value of `b` is `-1` b. 1 c. `0` d.`2`

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