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Mathematics · 2025 · 1 mark
CBSE 2025 · Region 7 · Set 1 · Q11
If f: R → R is defined as f( x )=2 x - sin x, then f is:
If $\displaystyle f: R \rightarrow R$ is defined as $\displaystyle f(\mathrm{x})=2 \mathrm{x}-\sin \mathrm{x}$, then $\displaystyle f$ is :
Official answer
(B)
an increasing function
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CBSE Class 12 Mathematics past-paper question from the 2025 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.