CBSE 2025 · Region 4 · Set 1 · Q3 · 1 mark
For real x , let $\displaystyle \mathrm{f}(\mathrm{x})=\mathrm{x}^{3}+5 \mathrm{x}+1$. Then :
Official answer
From CBSE’s own marking scheme for this paper.
(C)
f is one-one and onto on R
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CBSE Class 12 Mathematics past-paper question from the 2025board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.