Let g be the greatest integer function. Then the function f(x)=(g(x))^2-g(x^2) is discontinuous at

NDA 2017 Mathematics question

Let g be the greatest integer function. Then the function is discontinuous at

Answer: (D)

At : just to the left, and , so ; at 1, ; just to the right, , , . So is continuous at 1. At : just to the left, $g(x) =

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Question ID VK-028782