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Mathematics · 2026 · 1 mark
CBSE 2026 · Region 4 · Set 1 · Q8
The greatest integer function, f ( x )=[ x ], 0< x <3 is not differentiable at how many points?
The greatest integer function, $\displaystyle \mathrm{f}(\mathrm{x})=[\mathrm{x}], 0<\mathrm{x}<3$ is not differentiable at how many points?
Official answer
(B)
At only two points
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CBSE Class 12 Mathematics past-paper question from the 2026 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.