Find the point on the curve x2/9-y2/16=1 at which the tangent is parallel to the y axis
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Answer:
x^2/9-y2/16=1
differntiating both side
2x/9-2y/16y'=0
y'=16x/9y
Given that y'=1/0
y=0,x=+-3
Hence points are
(3,0);(-3,0)
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