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
shubhi tiwari Grade: 12
        

The difference between the roots of the equation


x2 + ax +1=0 is less than 51/2  then set of all possible values of


 a is?

8 years ago

Answers : (1)

piyush garg
9 Points
										

let roots of equation areX and Y


then sum of roots=-a


product of roots XY=1


given difference of roots <5^1/2


squaring on both the sides


(X-Y)^2<5


(x-y)^2=(x+y)^2-4XY


=a^2-4<5


(a^2-9)<0


(a-3)(a+3)<0


a=(-3,3)

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