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If ("lim")(xvec0)((1+a^3)+8e^(1/x))/(1+(...

If `("lim")_(xvec0)((1+a^3)+8e^(1/x))/(1+(2+b+b^2)e^(1/x))=2,` where `a ,b in R ,` then the possible ordered pair (a,b) is `(2,-2)` (b) `(1,-2)` `(1,1)` (d) `(-1,1)`

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