Cho hàm số \(f \left( x \right) \) và \(g \left( x \right) \) có \( \underset{x \to {{x}_{0}}}{ \mathop{ \lim }} \,f \left( x \right)=L, \, \, \underset{x \to {{x}_{0}}}{ \mathop{ \lim }} \,g \left( x \right)=M. \) Khẳng định nào sau đây là đúng?
A.\(\underset{x\to {{x}_{0}}}{\mathop{\lim }}\,\left| f\left( x \right)+g\left( x \right) \right|=\underset{x\to {{x}_{0}}}{\mathop{\lim }}\,\left| f\left( x \right) \right|+\underset{x\to {{x}_{0}}}{\mathop{\lim }}\,\left| g\left( x \right) \right|\)
B. \(\underset{x\to {{x}_{0}}}{\mathop{\lim }}\,\left| f\left( x \right)+g\left( x \right) \right|=\underset{x\to {{x}_{0}}}{\mathop{\lim }}\,\left[ f\left( x \right)+g\left( x \right) \right]\)
C. \(\underset{x\to {{x}_{0}}}{\mathop{\lim }}\,\left| f\left( x \right)+g\left( x \right) \right|=\underset{x\to {{x}_{0}}}{\mathop{\lim }}\,f\left( x \right)+\underset{x\to {{x}_{0}}}{\mathop{\lim }}\,g\left( x \right)\)
D.\(\underset{x\to {{x}_{0}}}{\mathop{\lim }}\,\left| f\left( x \right)+g\left( x \right) \right|=\left| \underset{x\to {{x}_{0}}}{\mathop{\lim }}\,\left[ f\left( x \right)+g\left( x \right) \right] \right|\)
A.\(\underset{x\to {{x}_{0}}}{\mathop{\lim }}\,\left| f\left( x \right)+g\left( x \right) \right|=\underset{x\to {{x}_{0}}}{\mathop{\lim }}\,\left| f\left( x \right) \right|+\underset{x\to {{x}_{0}}}{\mathop{\lim }}\,\left| g\left( x \right) \right|\)
B. \(\underset{x\to {{x}_{0}}}{\mathop{\lim }}\,\left| f\left( x \right)+g\left( x \right) \right|=\underset{x\to {{x}_{0}}}{\mathop{\lim }}\,\left[ f\left( x \right)+g\left( x \right) \right]\)
C. \(\underset{x\to {{x}_{0}}}{\mathop{\lim }}\,\left| f\left( x \right)+g\left( x \right) \right|=\underset{x\to {{x}_{0}}}{\mathop{\lim }}\,f\left( x \right)+\underset{x\to {{x}_{0}}}{\mathop{\lim }}\,g\left( x \right)\)
D.\(\underset{x\to {{x}_{0}}}{\mathop{\lim }}\,\left| f\left( x \right)+g\left( x \right) \right|=\left| \underset{x\to {{x}_{0}}}{\mathop{\lim }}\,\left[ f\left( x \right)+g\left( x \right) \right] \right|\)
Loga
Hóa Học lớp 12
