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Question

Find the equation of the parabola whose vertex is (3,2) and focus is (3,1).

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Solution

Clearly we can see that axis of parabola is parallel to y-axis
Assume the equation of parabola to be :(xh)2=4b(yk)
Focus =(h,k+b)=(3,1)
Vertex =(h,k)=(3,2)
h=3,k=2,b=3
equation of parabola is : (x3)2=12(y+2)

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