我
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不定积分∫xde-x=
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∫cos2xdx=
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- A.<img src="//img1.yqda.net/question-name/3b/79ad350291a12ebb0486bdaf08754d.png" width="41" height="50"/>
- B.<img src="//img1.yqda.net/question-name/eb/022830f9dffdf0615c6a2dde647bb3.png" width="39" height="49"/>
- C.1
- D.<img src="//img1.yqda.net/question-name/c5/0c30f7d512b0cd560367ef95e48bab.png" width="39" height="54"/>
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- A.λ=-2或λ=4
- B.λ=2或λ=4
- C.λ=-2或λ=-4
- D.λ=2或λ=-4
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- A.<img src="//img1.yqda.net/question-name/eb/90d82b43993d0656a8480eda47dd5e.png" width="87" height="49"/>
- B.<img src="//img1.yqda.net/question-name/db/cdbeb20b30467414678aa74e3cefb3.png" width="100" height="46"/>
- C.<img src="//img1.yqda.net/question-name/74/4352215c7fa9b68d112c042e4d4e88.png" width="99" height="46"/>
- D.<img src="//img1.yqda.net/question-name/1d/ff373334cbbcdfe4e44bd8f81f6a5e.png" width="106" height="45"/>
- A.<img src="//img1.yqda.net/question-name/15/4e84bb80c1bf748be4ad93423ceddd.png" width="54" height="42"/>
- B.y=x<sup>2</sup>
- C.y=|x|
- D.<img src="//img1.yqda.net/question-name/87/e29213dbc109b1624f8945d82a2189.png" width="63" height="55"/>
- A.<img src="//img1.yqda.net/question-name/2d/0a881984960946b6cd2a00de745a36.png" width="52" height="33"/>
- B.<img src="//img1.yqda.net/question-name/f1/5712627d838f775bd9d177b9a44226.png" width="55" height="43"/>
- C.<img src="//img1.yqda.net/question-name/74/e5b4c777db0d8249a44546aaa0b675.png" width="69" height="46"/>
- D.<img src="//img1.yqda.net/question-name/a9/54af43477c8fa753933d501bc52c57.png" width="61" height="38"/>
- A.2x+y+3=0
- B.2x-y-3=0
- C.2x+y+1=0
- D.2x-y-1=0
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- A.-4
- B.-2
- C.2
- D.4
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下列极限中，不正确的是
- A.<img src="//img1.yqda.net/question-name/01/33a438b227a6e00643c6782b5e1063.png" width="145" height="42"/>
- B.<img src="//img1.yqda.net/question-name/35/921a5b0d99df3ab6481baecaede17d.png" width="111" height="54"/>
- C.<img src="//img1.yqda.net/question-name/be/daa4443509dc32f89470387e741cbb.png" width="125" height="49"/>
- D.<img src="//img1.yqda.net/question-name/63/c1a928457867d56106757167cd2803.png" width="124" height="49"/>
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设函数
时，f(x)是
时，f(x)是- A.无界变量
- B.无穷大量
- C.有界，但非无穷小量
- D.无穷小量
在空间直角坐标系中表示的图形是- A.双曲柱面
- B.平面
- C.双曲线
- D.椭圆柱面
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- A.λ=-1
- B.λ=2
- C.λ=0
- D.λ=-2
- A.yz面上
- B.zx面上
- C.xy面上
- D.x轴上
