for what value of k the quadratic equation a2 _ ka + 1 = 0 has equal r – InterviewSolution

1.

for what value of k the quadratic equation a2 _ ka + 1 = 0 has equal roots

Answer»

Equation a^2 + ka + 1 = 0 has equal roots

Then determinant should be equal 0.

Hence,(k)^2 - 4*1*1 = 0k^2 = 4k = 2, - 2

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