求由曲线围成的均匀图形关于轴Ox的静力矩．

A . 正确 B . 错误

A .https://assets.asklib.com/psource/2015102908433150108.png B .https://assets.asklib.com/psource/2015102908440782422.jpg C .https://assets.asklib.com/psource/2015102908443161659.jpg D .https://assets.asklib.com/psource/2015102908445394574.jpg

A . 11/3 B . 22/3 C . 32/3 D . 86/3

A .https://assets.asklib.com/psource/2015103008435526826.jpg B .https://assets.asklib.com/psource/201510300844073703.jpg C .https://assets.asklib.com/psource/2015103008442389299.jpg D .https://assets.asklib.com/psource/201510300844373107.jpg

A . ln3 B . 2+ln3 C . ln2 D . 2-ln3

A . 36π B . 54π C . 72π D . 108π

求由曲线y=x²和直线y=2x+3所围成韵平面图形的面积s．

如图10-3,设曲线y=<img src='https://img2.soutiyun.com/ask/2020-11-30/975595449507168.png' />,过原点作其切线,求此曲线、切线及x轴围成的平面图形绕x轴旋转一周所得到的旋转体的表面积. <img src='https://img2.soutiyun.com/ask/2020-11-30/975595471682437.png' /> 答案:解题

A．1 B．2 C．1/2 D．1/3

由曲线y=x³,直线x=2,y=0所围成的图形,分别绕x轴及y轴旋转,计算所得的两个旋转体的体积(如图5-12). <img src='https://img2.soutiyun.com/ask/2020-11-02/973169822615045.png' />

计算由曲线y=e^-x(x²+3+1)+e²，轴Ox和经过函数的y(x)的极值点引平行于Oy的二直线围成的曲边梯形的面积．

求由χ轴、曲线<img src='https://img2.soutiyun.com/ask/2020-10-27/9726571312104.png' />及曲线<img src='https://img2.soutiyun.com/ask/2020-10-27/972657142143025.png' />过原点的切线所围成图形的面积,并求该图形分别绕χ轴与y轴旋转所得旋转体的体积.

<img src='https://img2.soutiyun.com/ask/2020-08-19/966694033172229.png' />

求双曲线<img src='https://img2.soutiyun.com/ask/2020-08-13/966174938267652.png' />所围成的平面图形绕y轴旋转所产生的旋转体的体积.

曲线y＝x(x－1)(2－x)与x轴所围成的图形的面积可表示为()． <img src='https://img2.soutiyun.com/ask/uploadfile/2247001-2250000/4fc3fa773ba3ff1b4a790c7f86a536e7.jpg' />

A．2 B．4 C．6 D．8

曲线<img src='https://img2.soutiyun.com/shangxueba/ask/17664001-17667000/17665581/2015103008433015996.jpg' />围成的平面图形绕x轴旋转产生的旋转体体积是（）。 A．<img src='https://img2.soutiyun.com/shangxueba/ask/17664001-17667000/17665581/2015103008435526826.jpg' /> B．<img src='https://img2.soutiyun.com/shangxueba/ask/17664001-17667000/17665581/201510300844073703.jpg' /> C．<img src='https://img2.soutiyun.com/shangxueba/ask/17664001-17667000/17665581/2015103008442389299.jpg' /> D．<img src='https://img2.soutiyun.com/shangxueba/ask/17664001-17667000/17665581/201510300844373107.jpg' />

求由曲线<img src='https://img2.soutiyun.com/ask/2020-11-02/973174373520342.jpg' />以及直线x=0，y=0，x=1所围成的平面图形的面积。

<img src='https://img2.soutiyun.com/ask/2020-12-28/978032599196113.png' />