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Applied Mathematics · 2025 · 1 mark
CBSE 2025 · Central · Set 4 · Q7
The rate of change of population P(t) with respect to time (t), where α, β are the constant birth and death rates, respectively, is
The rate of change of population P(t) with respect to time (t), where $\displaystyle \alpha, \beta$ are the constant birth and death rates, respectively, is
Official answer
(B)
$\displaystyle \frac{\mathrm{dP}}{\mathrm{dt}}=(\alpha-\beta) \mathrm{P}$
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CBSE Class 12 Applied 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.