Q. 11 C5.0( 1 Vote )

Find the values of k, for which the given equation has real roots:

kx2+ 4x + 1 = 0

Answer :

Roots are equal


d = 0


d = b2 – 4ac


d = (4)2 – 4 (1) (k)


d = 16 – 4k


Put d = 0


0 = 16 – 4k


4k = 16


k = 4


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