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anonymous
 one year ago
Find the volume bounded by y=4x^3, x+y=5, and x=0 rotated around the xaxis. I used the Washer Method and got π(2510x+x^216x^6)dx [0,4], but I got a ridiculously large number when I solved for the whole thing. The answer is supposed to be 379π/21
anonymous
 one year ago
Find the volume bounded by y=4x^3, x+y=5, and x=0 rotated around the xaxis. I used the Washer Method and got π(2510x+x^216x^6)dx [0,4], but I got a ridiculously large number when I solved for the whole thing. The answer is supposed to be 379π/21

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IrishBoy123
 one year ago
Best ResponseYou've already chosen the best response.1answer seems fine :p

phi
 one year ago
Best ResponseYou've already chosen the best response.0I used the Washer Method (I assume that means you integrated over dy?) if so, notice you have to break the problem into two integrals because the "right boundary" changes. As Irish shows, it makes more sense to use the shell method.

IrishBoy123
 one year ago
Best ResponseYou've already chosen the best response.1yeah, i did the other way first and it is bit more of a pain
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