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Question

(3,2) lies _______ the ellipse 16x2+9y2−16x−32=0

A
Inside
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B
Outside
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C
On
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D
None of the above
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Solution

The correct option is B Outside
Ellipse : 16x2+9y216x32=0
Let S=16x2+9y216x32
Putting point (3,2) in S we get
S(3,2) =16×(3)2+9×(2)216×332
=144+364832
=18080
=100
S(3,2)>0
Hence, point lies outside ellipse.

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