Let f(x)=(x^2-9x+20)/(x-[x]) (where [x] ...

Let `f(x)=(x^2-9x+20)/(x-[x])` (where `[x]` is the greatest integer not greater than `xdot` Then (A)`("lim")_(x->5)f(x)=1` (B) `("lim")_(x->5)f(x)=0` (C) `("lim")_(x->5)f(x) ` does not exist. (D)none of these

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