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
Grade: 9
        
hello,
           i am looking for an answer to the question in maths which is related to the chapter pair of staight lines. the question is
 
the slope of one line of 3x square + 2hxy + 8y square is double the slope of the other line then h square =
one year ago

Answers : (2)

Nayak Roshan
44 Points
							
He let the slopes of two lines be m1 and m2. Therefore given is 2m1=m2.
In the given equation there are two straight lines. Buy some derivation you get m1 + m2 = -2h/b and m1m2=a/b. 
Here the equation is of the form ax+ 2hxy + by2.  which gives a=3,b=8.
Solving: m1+m2 = -2h/8 , but 2m1=m2.
Therefore  3m1= -2h/8
m1=-2h/24. (Eq-1).
And m1m2=a/b,
Therefore m1 (2m1)=3/8
2ml2=3/8
m1= root3/4. (Eq-2).
Equating 1 and 2 , -2h/24=root3/4
-2h=6 (root3)
h= (-3(root3))
h2=(-3(root3))2
h2=9×3=27
For the proof related to those formulas please refer your notes or coaching material but I have solved you the problem....
HOPE THIS HELPED YOU....
one year ago
Nayak Roshan
44 Points
							
Are you the candidate of BASE BANGALORE. And if yes please refer to that material it's good even i am a candidate of that coaching institute.....
one year ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies

Get Extra Rs. 1,590 off

COUPON CODE: SELF10


Course Features

  • 731 Video Lectures
  • Revision Notes
  • Previous Year Papers
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Test paper with Video Solution


Course Features

  • 101 Video Lectures
  • Revision Notes
  • Test paper with Video Solution
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Previous Year Exam Questions


Get Extra Rs. 233 off

COUPON CODE: SELF10

Ask Experts

Have any Question? Ask Experts

Post Question

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