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- A.3x-y+1=0
- B.3x+y-1=0
- C.3x+y+1=0
- D.3x-y-1=0
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- A.<img src="//img1.yqda.net/question-name/85/01983699a81f2923d51ce094d9f4aa.jpg" height="13" width="57" />
- B.<img src="//img1.yqda.net/question-name/16/691fdcc6f4ebfdfb590120b21ebb2a.jpg" height="13" width="59" />
- C.<img src="//img1.yqda.net/question-name/44/4a28e5331a7ea69d3f49914101c584.jpg" height="13" width="59" />
- D.<img src="//img1.yqda.net/question-name/27/f9a21625a39826bba44fa6964dc59d.jpg" height="13" width="27" />
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- A. y<sup>4</sup>cos(xy<sup>2</sup>)
- B. －y<sup>4</sup>cos(xy<sup>2</sup>)
- C. y<sup>4</sup>sin(xy<sup>2</sup>)
- D. －y<sup>4</sup>sin(xy<sup>2</sup>)
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- A.<img width="63" height="28" src="//img1.yqda.net/question-name/f5/185f0507a67f8ed589a7193c9ec8f3.png" />
- B.<img width="63" height="28" src="//img1.yqda.net/question-name/f7/917e1ac73c5f245b689d165ef46127.png" />
- C.exdx
- D.exIn xdx
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- A.<img src="//img1.yqda.net/question-name/05/3a27d8c2c507db84fb0a35ac707f9e.jpg" height="28" width="36" />
- B.<img src="//img1.yqda.net/question-name/a5/83d613efba81b959a4f9252b050a71.jpg" height="26" width="37" />
- C.<img src="//img1.yqda.net/question-name/79/fe43cb420b61014cc69f8139730e9a.jpg" height="28" width="44" />
- D.<img src="//img1.yqda.net/question-name/42/b7322d7997c969df0f5389407f850f.jpg" height="26" width="36" />
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- A.-2ycos(x+y<sup>2</sup>)
- B.-2ysin(x+y<sup>2</sup>)
- C.2ycos(x+y<sup>2</sup>)
- D.2ysin(x+y<sup>2</sup>)
- A.小于0
- B.等于0
- C.大于0
- D.不确定
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- A.0
- B.2x3
- C.6x2
- D.3x2
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- A.10/3
- B.5/3
- C.1/3
- D.2/15
- A.2x-ex
- B.<img width="73" height="14" src="//img1.yqda.net/question-name/d8/a43325ee77e3a94261c7738e59038f.png" />
- C.<img width="73" height="14" src="//img1.yqda.net/question-name/00/5d8b6048915dc2433e85108e8c2c74.png" />
- D.<img width="87" height="14" src="//img1.yqda.net/question-name/8e/1765026682c07604e5650f6e205741.png" />
