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Mathematics 15 Online
OpenStudy (anonymous):

how to set up integral for .

OpenStudy (anonymous):

OpenStudy (anonymous):

@mukushla

OpenStudy (anonymous):

i think we can change it to polar coordinates...

OpenStudy (anonymous):

ok. how?

OpenStudy (anonymous):

let me think

OpenStudy (anonymous):

ok

OpenStudy (anonymous):

for z i think it varies from 0 to r^2 ? correct?

OpenStudy (anonymous):

the problem is how to find limits for r in the cylindrical coordinates for x^2+y^2=2x

OpenStudy (anonymous):

thats right

OpenStudy (anonymous):

\( r= 2 \cos \theta \) is polar form of \(x^2+y^2=2x\)

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

so it means r varies from 0 to 2cos(thetha) ?

OpenStudy (anonymous):

are you sure theta will vary 0..2pi ? because i have plotted this and seems little bit tilted towards the right.

OpenStudy (anonymous):

u tell me what do u think... i cant thinkat all....

OpenStudy (anonymous):

OpenStudy (anonymous):

it looks like from -pi/2..pi/2 right???

OpenStudy (anonymous):

thats right

OpenStudy (anonymous):

ok so how to find r limits ?

OpenStudy (anonymous):

u were right i think r 0 ----> 2 cos theta

OpenStudy (anonymous):

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