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Mathematics 13 Online
OpenStudy (anonymous):

The equation of a circle is x2 + y2 + Cx + Dy + E = 0. If the radius of the circle is decreased without changing the coordinates of the center point, how are the coefficients C, D, and E affected?

OpenStudy (loser66):

Yup C, D decrease to 1/2 C , 1/2 D respectively E becomes E- (C/4 + D/4)

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