第六章单元测试
- The arc length of the curve , is( )。
- The area bounded by , is ( )。
- The volume of the solid obtained by revolving the region bounded by the x-axis and the y-axis about the x-axis is( )。
- The area bounded by , is ( )。
- The volume of the solid generated by revolving about is( )。
A: B: C: D:
答案:
A: B: C: D:
A:1 B:0.5 C: D:
A: B: C: D:
A: B: C: D:
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