CBSE 2023 · Region 5 · Set 3 · Q9 · 1 mark
The function $\displaystyle \mathrm{f}(x)=x^{3}+3 x$ is increasing in interval
Official answer
From CBSE’s own marking scheme for this paper.
(C)
$\displaystyle \mathbb{R}$
Application of DerivativesIncreasing and Decreasing FunctionsApplymcqeasy
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CBSE Class 12 Mathematics past-paper question from the 2023board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.