由曲线[img=50x26]180350c4043d1da.png[/img]和[img=81x26]180350c40c9782d.png[/img]所围成的图形绕y轴旋转一周而成的旋转体的体积为( )
A: [img=11x14]180350c415f255e.png[/img]
B: [img=22x43]180350c41f595b0.png[/img]
C: [img=22x43]180350c427293f1.png[/img]
D: [img=31x43]180350c42f5d345.png[/img]
A: [img=11x14]180350c415f255e.png[/img]
B: [img=22x43]180350c41f595b0.png[/img]
C: [img=22x43]180350c427293f1.png[/img]
D: [img=31x43]180350c42f5d345.png[/img]
举一反三
- 由y=1/x,y=4x,y=0,x=2所围成图形绕x轴旋转成的旋转体体积 A: [img=31x43]1803c4137ccd13d.png[/img] B: [img=22x43]1803c4138458ff1.png[/img] C: [img=22x43]1803c4138c13df6.png[/img] D: [img=31x43]1803c41393e9fa9.png[/img]
- 由y=1/x,y=4x,y=0,x=2所围成图形绕x轴旋转成的旋转体体积 A: [img=31x43]1803c3ea995b2c8.png[/img] B: [img=22x43]1803c3eaa1814e8.png[/img] C: [img=22x43]1803c3eaa99c745.png[/img] D: [img=31x43]1803c3eab1fc82b.png[/img]
- 由曲线[img=50x26]180350c3d4916cb.png[/img]和[img=81x26]180350c3dd0a100.png[/img]所围成的图形绕x轴旋转一周而成的旋转体的体积为( ) A: [img=29x43]180350c3f65e1d6.png[/img] B: [img=20x43]180350c404abf61.png[/img] C: [img=20x43]180350c40cbcbef.png[/img] D: [img=11x14]180350c415210ea.png[/img]
- 设曲线y=y(x)满足xdy+(x-2y)dx=0,且y=y(x)与直线x=1及x轴所围成的平面图形绕x轴旋转的旋转体积最小,则y(x)= A: [img=61x43]1802fb22da22c02.png[/img] B: [img=61x43]1802fb22e260f78.png[/img] C: [img=55x43]1802fb22eb6f8a2.png[/img] D: [img=55x43]1802fb22f43897e.png[/img]
- 由曲线[img=50x26]18031af004a9389.png[/img]与[img=73x26]18031af00d5bc9e.png[/img]所围成的图形绕x轴旋转一周所产生的旋转体的体积为[img=29x43]18031af015eefd7.png[/img].