Question

If the equation 4x² – 3kx + 1 = 0 has equal roots then k = ?

पर्याय

• `± 2/3`

• `± 1/3`

• `± 3/4`

• `± 4/3`

Answer 1

`bb(± 4/3)`

Explanation:

It is given that the roots of the equation (4x² – 3kx + 1 = 0) are equal. 

∴ (b² – 4ac) = 0 

⇒ (3k)² – 4 × 4 × 1 = 0 

⇒ 9k² = 16 

⇒ `k^2 = 16/9` 

⇒ `k = ± 4/3`