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Question

Find the vertex, axis, latus rectum, and focus of the parabolas x22ax+2ay=0.

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Solution

x22ax+2ay=0x22ax=2ayx22ax+a2=2ay+a2(xa)2=2a(ya2)

Comparing with the standard equation X2=4AY

Vertex of the parabola is X=0,Y=0

xa=0,ya2=0x=a,y=a2(a,a2)

Axis of the parabola is X=0

xa=0

x=a

Latus rectum of the parabola is |4A|

Here A=a2

LL=2a

Focus of the parabola is X=0,Y=A

xa=0,ya2=a2x=a,y=0(a,0)


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