CBSE 2025 · Region 7 · Set 3 · Q8 · 1 mark
If $\displaystyle f(x)=\left\{\begin{array}{cc}3 \mathrm{a} x-b & , x>1 \\ 11 & , x=1 \\ -5 \mathrm{a} x-2 b & , x<1\end{array}\right.$ is continuous at $\displaystyle x=1$, then the values of $\displaystyle \mathrm{a}$ and $\displaystyle b$ are :
Official answer
From CBSE’s own marking scheme for this paper.
(C)
$\displaystyle \mathrm{a}=1, \mathrm{~b}=-8$
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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.