Banner 0
Banner 1
Banner 2
Banner 3
Banner 4
Banner 5

Q.

If the line y=3x3  cuts the parabola y2=x+2  at P and Q if A be the point (3,0)  then |AP.AQ|  is

see full answer

Start JEE / NEET / Foundation preparation at rupees 99/day !!

21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!
An Intiative by Sri Chaitanya

a

43(23)

b

43(3+2)

c

23(3+2)

d

23

answer is B.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

detailed_solution_thumbnail

The point A(3,0) lies on the given line whose slope is 3 . 

tanθ=3=tan600θ=600equation  of the line through A is
x3cos600=y0sin600=r
Where r is the distance of any point from A in the direction of  600. It interests the parabola
y2=x+2(r32)2=r2+3+23r22r4(2+3)=0r1r2=4(2+3)3=AP.AQAP.AQ=43(2+3)

Watch 3-min video & get full concept clarity

Best Courses for You

JEE

JEE

NEET

NEET

Foundation JEE

Foundation JEE

Foundation NEET

Foundation NEET

CBSE

CBSE

score_test_img

Get Expert Academic Guidance – Connect with a Counselor Today!

whats app icon