[(1)/(arct'(0)=2*" Then evaluate ")],[lim_(x rarr0)(2f(x)-3f(2x)+f(4x))/(x^(2))]

Let f(x) be a twice-differentiable function and f'(0)=2. The evaluate: lim_(x rarr0)(2f(x)-3f(2x)+f(4x))/(x^(2))

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Let f'(x) be continuous at x=0 and f'(0)=4 then value of lim_(x rarr0)(2f(x)-3f(2x)+f(4x))/(x^(2))

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