If the function f(x)=x^2-kx is monotonically increasing in the interval (1, ), then which one of the following is correct?

NDA 2021 Mathematics question

If the function is monotonically increasing in the interval , then which one of the following is correct?

Answer: (A)

. For to be increasing on we need for all . Since on this interval, the requirement is . Among the

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Question ID VK-033709