CBSE 2025 · Region 5 · Set 1 · Q5 · 1 mark
If $\displaystyle f(x)=\left\{\begin{array}{cc}\frac{\sin ^{2} a x}{x^{2}}, & x \neq 0 \\ 1, & x=0\end{array}\right.$ is continuous at $\displaystyle x=0$, then the value of $\displaystyle a$ is :
Official answer
From CBSE’s own marking scheme for this paper.
(C)
$\displaystyle \pm 1$
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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.