设 [img=15x19]1803216fabaca22.png[/img] 是抛物线 [img=59x26]1803216fb52d92f.png[/img]与直线 [img=44x18]1803216fbdf3232.png[/img] 及 [img=11x14]1803216fc640069.png[/img] 轴围成的图形,则 [img=15x19]1803216fabaca22.png[/img] 绕 [img=11x14]1803216fc640069.png[/img] 轴旋转而成的旋转体体积等于( ).
A: [img=22x43]1803216fdeeac66.png[/img]
B: [img=22x43]1803216fe73892f.png[/img]
C: [img=22x43]1803216ff0031ec.png[/img]
D: [img=31x43]1803216ff954343.png[/img]
E: [img=31x43]180321700165909.png[/img]
A: [img=22x43]1803216fdeeac66.png[/img]
B: [img=22x43]1803216fe73892f.png[/img]
C: [img=22x43]1803216ff0031ec.png[/img]
D: [img=31x43]1803216ff954343.png[/img]
E: [img=31x43]180321700165909.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]
- 180350c4756a81c.png及[img=42x22]180350c47d057da.png[/img]绕x轴旋转而成的旋转体的体积为( ) A: [img=31x43]180350c4859013a.png[/img] B: [img=31x43]180350c48e95d27.png[/img] C: [img=31x43]180350c496fc02e.png[/img] D: [img=20x18]180350c49eb8025.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]
- 180317059b5a38d.png绕y轴的旋转的旋转体体积 A: [img=31x43]18031705a3b820b.png[/img] B: [img=22x43]18031705ac97644.png[/img] C: [img=22x43]18031705b574ca1.png[/img] D: [img=31x43]18031705be9b6a0.png[/img]