Solution: Determine k so that the equation 4x^2 + kx + 1 = 0 will have just one real solution

Determine k so that the equation 4x^2 + kx + 1 = 0 will have just one real solution.

Determine k so that the equation 4x^2 + kx + 1 = 0 will have just one real solution.

Problem Statement: EE Board October 1990

Determine k so that the equation 4x^2 + kx + 1 = 0 will have just one real solution.
  • A. 3
  • B. 4
  • C. 5
  • D. 6

Problem Answer:

The value of k is 4.

Solution:

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