2014年自学考试《高等数学(工本)》考前冲刺试卷(3)

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21

  • A.<img src="//img1.yqda.net/question-name/f0/201f61edab8b39d463412de9dc8725.jpg" alt="" />
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  • D.1
  • E.<img src="//img1.yqda.net/question-name/9d/d1b87e693c5191f00b4dfea507bfef.jpg" alt="" />
22

  • A.<img src="//img1.yqda.net/question-name/b2/72fa69996c71499b8fd4fb38017140.jpg" alt="" />
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  • C.<img src="//img1.yqda.net/question-name/da/12ab0245d13473efd0bcf5abd84e03.jpg" alt="" />
  • D.π
23

  • A.是f(x,y)的极小值点
  • B.是f(x,y)的极大值点
  • C.不是f(x,y)的驻点
  • D.是f(x,y)的驻点但不是极值点
24

  • A.<img src="//img1.yqda.net/question-name/c6/d3d57aea27c6020ea9b453833f3ac2.jpg" alt="" />
  • B.<img src="//img1.yqda.net/question-name/58/3b15cb4c534a7c05eb8c76d0ca8476.jpg" alt="" />
  • C.<img src="//img1.yqda.net/question-name/ae/729cec14e22b9708e92dd1d7f13923.jpg" alt="" />
  • D.4
25

  • A.<img src="//img1.yqda.net/question-name/26/f3401911d05d62e93e42661783971d.jpg" alt="" />
  • B.<img src="//img1.yqda.net/question-name/4e/2a14cf1ef0a142d0a7af3cde1c623b.jpg" alt="" />
  • C.<img src="//img1.yqda.net/question-name/cc/2079a0ed5dc5f9cedc7907464a4f36.jpg" alt="" />
  • D.<img src="//img1.yqda.net/question-name/5a/e2c66e8beb40826d06b1fc578daeb0.jpg" alt="" />