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GATE 2021 MT – Question 24

Engineering Mathematics · Calculus and vector calculus · 1 mark · Numerical answer

The value of $\lim_{x\to0}\sin^2(5x)/\sin^2x$ is ______ (nearest integer).

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Correct answer: 25 to 25

Explanation

As x→0, sin5x/(sin x)→5 by the small-angle limit. Squaring gives **25**. Both numerator and denominator are squared sine functions, not sin(25x).