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THREE NORMALS ARE DRAWN FROM THE POINTS (14,7) TO THE CURVE y2-16X-8Y=0. FIND THE COORDINATES OF FEET OF NORMALS.
NOTE. IN EQUNTION 2 IS POWER OF y
dear manoj,
let the coordinates of foot of perprndicular be (x1,y1)
differentiating the equation to find the slope of the normal,
=> dy/dx = 8/(y-4)
slope = -(dx/dy)
hence we can find the equation of normal in terms of x1 and y1.
then passing through the (x1,y1)
thus we find a cubic equation on solving which we get,
y1= 0, 16 , -4
thus corresponding x1 = 0, 8 , 3
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