Consider region enclosed by the curves y=sinx and and y=0 for x between 0 and.Find the volume of the solid obtained when this region is revolved about the y-axis.
Attempt to solution:
Use shells method
Use integration by parts
How come the answer book is saying l am wrong ? What did l do wrong ?
I tried really hard, but i just couldn't see your answer book on my PC screen.Originally Posted by nyasha
Consider region enclosed by the curves y=sinx and and y=0 for x between 0 and
Attempt to solution:
Use shells method
Use integration by parts
How come the answer book is saying l am wrong ? What did l do wrong ?
so, did you evaluate the definite integral fromto
Consider region enclosed by the curves y=sinx and and y=0 for x between 0 and
Attempt to solution:
Use shells method
Use integration by parts
How come the answer book is saying l am wrong ? What did l do wrong ?
when you reflect it you get a cylinder, unroll it to make a rectangle and the dimensions are 2piX by sinx
multiply them and take out the 2pi
2pi (XsinX)
then integrate on your calculator or by hand
either way the answer should be
19.739 or 6.28 pi
is that right?
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