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December 21, 2014

Homework Help: calculus

Posted by Kelly on Saturday, June 28, 2008 at 9:36pm.

conic sections

question 1:
verify that the point (3,2) lies on the circle x^2+y^2-8x+2y+7=0, and find the equation of the tangent at this point.

question 2:
find the length of the tangents from the point (5,7) to the circle x^2+y^2-4x-6y+9=0

question 3:
find the equation of the common chord of the circles x^2+y^2-6x+2y+1=0 and x^2+y^2+4x-2y-13=0

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