Question: f ( x ) = x 2 - 7 x 1 2 x - 3 a t x = 4 f ( a ) is

f(x)=x2-7x12x-3atx=4
f(a) is defined. Select an answer
limxaf(x) exists.
limxaf(x)=f(a)vv Select an answer passes
So,f(x) fails x=4.
f ( x ) = x 2 - 7 x 1 2 x - 3 a t x = 4 f ( a )

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