Question

The domain of the function f(x)=√4x-x

Answer 1

Assuming your question was

f(x)=$\sqrt{4x^{2} -x}$

4$x^{2}$-x $\geq$ 0

x(4x-1) $\geq$ 0

using wavy curve graph

   +             -             +

<--------|--------------|---------->

          0              1/4

Therefore, domain of the function is

[-∞,0] ∪ [1/4,∞]

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