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Determine the value of k for which the quadratic equation 4x2 – 3kx + 1 = 0 has equal roots :
- a)
- b)
- c)
- d)
Correct answer is option 'B'. Can you explain this answer?
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Roots are real then ,
b^2 - 4ac = 0
4x^2 - 3kx + 1
( -3k)^2 - 4 × 4 × 1 =0
9k^2 - 16 = 0
9k^2 = 16
k^2 = 16 / 9
k = root under 16 / 9
k = +_ 4 / 3
That's why option (B) is correct.
b^2 - 4ac = 0
4x^2 - 3kx + 1
( -3k)^2 - 4 × 4 × 1 =0
9k^2 - 16 = 0
9k^2 = 16
k^2 = 16 / 9
k = root under 16 / 9
k = +_ 4 / 3
That's why option (B) is correct.
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Determine the value of k for which the quadratic equation 4x2– 3kx + 1 = 0 has equal roots :a)b)c)d)Correct answer is option 'B'. Can you explain this answer?
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