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
Rohit Rastogi Grade:
        

The number of distinct real values of β, for which the vectors 


2i + j + k , i - β2 j + k and i + j - β2 k are coplanar, is :-



  1. 0

  2. 1

  3. 2

  4. 3

7 years ago

Answers : (1)

Askiitians Expert Soumyajit IIT-Kharagpur
28 Points
										

Dear Rohit Rastogi,


Ans:- CORRECT ANS IS 2 


Let the vectors are a,b,c


As they are coplanar and hence [abc]=0


Solving we get an equation of β which is satisfied by real values of β , iff β²=2


Hence β=+√2 or -√2


Hence 2 values of β are possible.


 


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 preparation.



All the best Rohit Rastogi !!!


 



Regards,


Askiitians Experts
Soumyajit Das IIT Kharagpur

7 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
Get extra Rs. 6,837 off
USE CODE: JYOTI
  • Statistics and Probability
  • OFFERED PRICE: Rs. 636
  • View Details
Get extra Rs. 273 off
USE CODE: JYOTI

Ask Experts

Have any Question? Ask Experts

Post Question

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