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[" If "f(x)=sum(k=0)^(n)a(k)|x-1|^(k)," ...

[" If "f(x)=sum_(k=0)^(n)a_(k)|x-1|^(k)," where "a_(k)in R," then "],[" a) "f(x)" is not continuous at "x=1],[" b) "f(x)" is differentiable at "x=1,AA a_(x)in R],[" c) "f(x)" is differentiable at "x=1," provided "a_(2x+1)=0" where "k=0,1,2,],[" d) none of these "]

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