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
Menu
shivanshi asthana Grade: 11
        

from a pointA (1,1),straight lines AL and AM are drawn at right angles to the pair of straight lines 3x2+7xy-2y2=0...then combined equation of AL and AM is............

8 years ago

Answers : (1)

Badiuddin askIITians.ismu Expert
147 Points
										

Dear shivanshi

3x2+7xy-2y2=0

m1 + m2 = 7/2

 m1.m2 =-3/2

 

now let a line  a'(x-1)2 + 2h'(x-1)(y-1) + b'(y-1)2 =0   whose line is perpendicular to the these lines

 m3 = -1/m1

m4 = -1/m2

 

m3 + m4 = -(m1+m2)/m1m2  

 -2h'/b'         = 7/3

m3.m4  = -1/m1m1

   a'/b'     = -2/3

 

a'(x-1)2 + 2h'(x-1)(y-1) + b'(y-1)2 =0

or

a'/b' (x-1)2 + 2h'/b' (x-1)(y-1) + (y-1)2 =0

- 2/3  (x-1)2 -7/3 (x-1)(y-1) + (y-1)2 =0

or

   2 (x-1)2 +7 (x-1)(y-1) +3 (y-1)2 =0

 Please feel free to post as many doubts on our discussion forum as you can.
If you find any question Difficult to understand - post it here and we will get you the answer and detailed
solution very  quickly.
 We are all IITians and here to help you in your IIT JEE  & AIEEE preparation.

 All the best.
 
Regards,
Askiitians Experts
Badiuddin

 


8 years ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies
  • Complete JEE Main/Advanced Course and Test Series
  • OFFERED PRICE: Rs. 15,900
  • View Details

Ask Experts

Have any Question? Ask Experts

Post Question

 
 
Answer ‘n’ Earn
Attractive Gift
Vouchers
To Win!!! Click Here for details