Cho lim x → 0 f ( x ) = 1 , lim x → 0 g ( x ) = 2 . Tính L = lim x → 0 [ f ( x ) + g ( x ) ] .

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Cho \[\mathop {\lim }\limits_{x \to 0} f\left( x \right) = 1,\mathop {\lim }\limits_{x \to 0} g\left( x \right) = 2\]. Tính \(L = \mathop {\lim }\limits_{x \to 0} \left[ {f\left( x \right) + g\left( x \right)} \right]\).

\(L = - 1\).

\(L = 3\).

\(L = 1\).

\(L = 0\).

Giải thích

\(L = \mathop {\lim }\limits_{x \to 0} \left[ {f\left( x \right) + g\left( x \right)} \right] = 1 + 2 = 3\). Chọn B.