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Let f(x)={(1/(|x|), for |x| ge 1),(ax^2+...

Let `f(x)={(1/(|x|), for |x| ge 1),(ax^2+b,for |x| < 1))` . If `f(x)` is continuous and differentiable at any point, then (A) `a=1/2, b=-3/2` (B) `a=-1/2, b=3/2` (C) `a=1,b=-1` (D) none of these

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