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20．
则F(O)=_________．- A.f(x)在[0，1]上可能无界
- B.f(x)在[0，1]上未必有最小值
- C.f(x)在[0，1]上未必有最大值
- D.方程f(x)=0在(0，1)内至少有一个实根
- A.xo为f(x)的极大值点
- B.xo为f(x)的极小值点
- C.xo不为f(x)的极值点
- D.xo可能不为f(x)的极值点
- 20
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- A.<img src="//img1.yqda.net/question-name/fd/fc4c9dd5775d5060bf6dda1d6ade4d.jpg" alt="" border="0" />
- B.f(x)=(x-4)2， x∈[-2，4]
- C.<img src="//img1.yqda.net/question-name/72/20d7943b5b92b3fa17daea40082031.jpg" alt="" border="0" />
- D.f(x)=｜x｜， x∈[-1，1]
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- A.<img src="//img1.yqda.net/question-name/c9/2ec381a2a410d4f894c63b866bf524.jpg" alt="" border="0" />
- B.<img src="//img1.yqda.net/question-name/f0/af44e1cdff6e0b75dca80e497c5820.jpg" alt="" border="0" />
- C.<img src="//img1.yqda.net/question-name/62/34e9ee2b3624b8eda76ac42b14b875.jpg" alt="" border="0" />
- D.<img src="//img1.yqda.net/question-name/47/e5683b1c71ecff0db931dc80dd0e5c.jpg" alt="" border="0" /> &nbs
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- A.0
- B.<img src="//img1.yqda.net/question-name/e2/4ea9d747acc0d0d4421dce566956f3.jpg" alt="" border="0" />
- C.1
- D.<img src="//img1.yqda.net/question-name/13/505d1e125fa45f8c15b07478c7e089.jpg" alt="" border="0" /> &nbs
- 24
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- A.6xarctanx2
- B.6xtanx2＋5
- C.5
- D.6xcos2x
- A.<img src="//img1.yqda.net/question-name/19/4ade59d667dc0e1a9958041a3ab135.jpg" alt="" border="0" />
- B.<img src="//img1.yqda.net/question-name/b8/c7153c1def8a85d216e75e1b1793d4.jpg" alt="" border="0" />
- C.<img src="//img1.yqda.net/question-name/4a/b26830c5252b525c53c41c1efe5ef2.jpg" alt="" border="0" />
- D.<img src="//img1.yqda.net/question-name/70/ef43281c77c8fcfcadc85c6eb7a1c9.jpg" alt="" border="0" /> &nbs
- A.f(x<sub>0</sub>)必存在
- B.f(x<sub>0</sub>)必不存在
- C.<img src="//img1.yqda.net/question-name/b8/d799b796129cf7b193a43fbf0ffd20.jpg" alt="" />
- D.<img src="//img1.yqda.net/question-name/fb/4cf7504aa8d7b8afa391df4aa65152.jpg" alt="" />
- A.f(x)对于g(x)是高阶的无穷小量
- B.f(x)对于g(x)是低阶的无穷小量
- C.f(x)与g(x)为同阶无穷小量，但非等价无穷小量
- D.f(x)与g(x)为等价无穷小量
- A.3
- B.2
- C.1
- D.0
