Let P be a point on the parabola, . If the distance of P from the centre of the circle,
is minimum, then the equation of the tangent to the parabola at P, is :
as we have learned
Standard equation of parabola -
- wherein
General form of a circle -
- wherein
centre =
radius =
Let the Coordinate of P be
satisfies this equation
so point P is (-2,1)
equation of tangent
Option 1)
Option 2)
Option 3)
Option 4)
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