Câu hỏi trắc nghiệm (10 câu):
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- A. \(\underset{x\to 1}{\mathop{\lim }}\,\frac{3x+2}{2-x}=5\).
- B. \(\underset{x\to {{2}^{+}}}{\mathop{\lim }}\,\frac{4x+5}{x-2}=+\infty \).
- C. \(\underset{x\to +\infty }{\mathop{\lim }}\,(\sqrt{{{x}^{2}}+2x+5}-x)=1\).
- D. \(\underset{x\to +\infty }{\mathop{\lim }}\,\frac{3x+2}{x-1}=+\infty \)
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- A. \(\underset{x\to -2}{\mathop{\lim }}\,({{x}^{2}}+3x+7)\).
- B. \(\underset{x\to +\infty }{\mathop{\lim }}\,(\sqrt{{{x}^{2}}+10}-x)\).
- C. \(\underset{x\to 2}{\mathop{\lim }}\,(3x-2)\).
- D. \(\underset{x\to {{3}^{-}}}{\mathop{\lim }}\,\left| x-3 \right|\)
-
- A. \(I\in \left( 3;5 \right)\).
- B. \(I\in \left( 2;3 \right)\).
- C. \(I\in \left( 5;6 \right)\).
- D. \(I\in \left( 1;2 \right)\).
-
Câu 4:
Giới hạn \(I=\underset{x\to +\infty }{\mathop{\lim }}\,\left( -2{{x}^{3}}+4x+5 \right)\)bằng.
- A. \(I=-\infty \).
- B. \(I=+\infty \).
- C. \(I=-2\).
- D. \(I=5\).
-
- A. \(I=3\).
- B. \(I=-1\).
- C. \(I=+\infty \).
- D. \(I=-5\).
-
- A. \(6\).
- B. \(5\).
- C. \(8\).
- D. \(7\).
-
- A. \(a=2\).
- B. \(a=0\).
- C. \(a=-2\).
- D. \(a=-1\).
-
- A. \(-4\).
- B. \(4\).
- C. \(10\).
- D. \(-14\).
-
- A. \(0\).
- B. \(1\).
- C. \(-\infty \).
- D. \(+\infty \).
-
- A. \(-3\).
- B. \(+\infty \).
- C. \(3\).
- D. \(-\infty \).
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