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Mathematics 7 Online
OpenStudy (anonymous):

Evaluate integral by converting to polar coordinates.

OpenStudy (anonymous):

Evaluate the iterated integral by converting to polar coordinates. \[\int\limits_{0}^{2}\int\limits_{0}^{\sqrt{2x-x^2}}\sqrt{x^2 +y^2} dy dx\]

OpenStudy (tkhunny):

Do it! \(r = \sqrt{x^{2} + y^{2}}\) and \(x = r\cos(\theta)\)

OpenStudy (anonymous):

hi we got 0 to pi/2 for limits of theta

OpenStudy (anonymous):

i already know about it i'm stuck on getting Radius

OpenStudy (anonymous):

i got x^2 + y^2 = 2x therefore R=sqrt(2x).... how do i draw this.?

OpenStudy (tkhunny):

You should recognize \(x^{2} + y^{2} = 2x\). \(x^{2} - 2x + y^{2} = 0\) \(x^{2} - 2x + 1 + y^{2} = 1\) \((x-1)^{2} + y^{2} = 1\) Is it looking more familiar, yet?

OpenStudy (anonymous):

so the center of circle is (1,0) and limits of radius => 0 to 1 ?

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