\(M\left( x \right) = 2x - \dfrac{1}{2}\)         ...

Câu hỏi: \(M\left( x \right) = 2x - \dfrac{1}{2}\)                     

A \(x = \dfrac{1}{4}\)

B \(x = \dfrac{-1}{4}\)

C \(x = \dfrac{1}{2}\)

D \(x = \dfrac{-1}{2}\)