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Shohini Sinha Ray Grade: Upto college level
        

If a<0 and discriminant of ax2+2bx+c=0 is negative then value of


det  a           b          ax+b


        b           c          bx+c          = 0


       ax+b     bx+c       0


 


Prove this plz........

7 years ago

Answers : (1)

askIITIians Expert
21 Points
										

Dear Sohini,


This is a very simple problem.


It is given that


a < 0 and 4b - 4ac > 0


0r a < 0 and b2 - ac > 0


Now, what you simply have to do is solve the given determinant using the properties which you have learnt and when you expand the equation you have to use a < 0 and b2 - ac > 0, use it and you will get the value of the determinant as 0.

7 years ago
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