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If the equation 4x^(2)-3kx+1=0 has equal...

If the equation `4x^(2)-3kx+1=0` has equal roots then k=?

A

`+-(2)/(3)`

B

`+-(1)/(3)`

C

`+-(3)/(4)`

D

`+-(4)/(3)`

Text Solution

Verified by Experts

The correct Answer is:
D
Since the roots are equal, we hae D=0.
`:." "9k^(2)-16=0impliesk^(2)=(16)/(9)impliesk=(4)/(3)" or "k=(-4)/(3).`
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RS AGGARWAL-QUADRATIC EQUATIONS -Test Yourself
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  3. If the equation 4x^(2)-3kx+1=0 has equal roots then k=?

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