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Question

If the parabola x2=2(2x+y) is shifted 2 unit along negative x-axis and 2 units along positive y-axis, then what will be the vertex of new parabola?

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Solution

Given the equation of parabola x2=2(2x+y)
On simplifying we get,
x2=4x+2y
x24x=2y
On adding 4 both side we get,
x24x+4=2y+4
(x2)2=2(y+2)
This is the standard equation of parabola we got on simplifying.

Now, translating it 2 units along negative x-axis and 2 unit along positive y-axis we get,
(x2+2)2=2(y+22)
x2=2y
On comparing x2=2y with translated equation of parabola (xh)2=4a(yk) we get the coordinate of vertex as (0,0).

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