HCU PHD CS JUNE 2021
January 20, 2025HCU PHD CS JUNE 2021
January 20, 2025HCU PHD CS JUNE 2021
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Question 13
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The monthly expenditure of a household, when analysed, was found to fit a quadratic
function e(x) = ax2 +bx + c. Assuming that the monthly expenditure can never be
negative (in the past or in the future), what can we say about the roots of e(x)?
function e(x) = ax2 +bx + c. Assuming that the monthly expenditure can never be
negative (in the past or in the future), what can we say about the roots of e(x)?
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Both are real
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Both are complex numbers
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One is real and one is complex
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One is real and negativp, the other is real and positive
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Correct Answer: B