Thank you for registering.

One of our academic counsellors will contact you within 1 working day.

Please check your email for login details.
MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping

From the point (15, 12) three normals are drawn to the parabola y 2 = 4x, then centroid of triangle formed by three co-normal points is



From the point (15, 12) three normals are drawn to the parabola y2 = 4x, then centroid of triangle formed by three co-normal points is




Grade:10

1 Answers

Amit Saxena
35 Points
7 years ago

(C)

 

Sol.     Let the equation of any normal be y = – tx + 2t + t3

 

            Since it passes through the points (15, 12)

 

            \         12 = –15t + 2t + t3                 i.e.       t3 – 13t – 12 = 0

 

            \         t = –1, –3/4

 

            \         The points are (1, –2), (9 – 6), (16, 8)        \         Centroid is (26/3,0)

Think You Can Provide A Better Answer ?

Provide a better Answer & Earn Cool Goodies See our forum point policy

ASK QUESTION

Get your questions answered by the expert for free