Cho Lim f(x) = - 2. Tính Lim fx)+4x - 1
Giải thích
Chọn A.
Ta có: \(\mathop {\lim }\limits_{x \to 3} \left[ {f\left( x \right) + 4x - 1} \right] = \mathop {\lim }\limits_{x \to 3} f\left( x \right) + \mathop {\lim }\limits_{x \to 3} \left( {4x - 1} \right) = - 2 + 4.3 - 1 = 9.\)