Hi all, n I have got a revision question, I just wanted to see whether you get the same answer as I have. Find the volume of revolution formed when the following region rotates about the x-axis between x=0, and x=3 y=5e^x Thanks.
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Originally Posted by Googl Hi all, n I have got a revision question, I just wanted to see whether you get the same answer as I have. Find the volume of revolution formed when the following region rotates about the x-axis between x=0, and x=3 y=5e^x Thanks. What is your answer, you just posted the question!
Originally Posted by TheEmptySet What is your answer, you just posted the question! Sorry, I forgot to add that. V = π25e^6 / 2
Originally Posted by Googl Sorry, I forgot to add that. V = π25e^6 / 2 You have half of the answer. What happened to the lower limit of integration? When you plug in t=0 you should not get zero!
I didn't realize that I thought if the lower limit is zero it will always be a zero, but I am aware of it now. So it will be: V = π(25e^6 / 2 - 25/2) How would you write this in terms of π?
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