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GATE 2026 ST – Question 24

Calculus · Single Variable Calculus · 1 mark · Numerical answer

Evaluate $\lim_{n\to\infty}n\int_{1-1/(2n)}^{1+1/(2n)}e^{t^2-1}dt$ (integer).

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Correct answer: 1 to 1

Explanation

The interval has width 1/n and shrinks to t=1, where the continuous integrand is 1. The integral mean-value theorem gives the expression e^(c_n²−1) for some c_n in that interval. Since c_n→1 the limit is **1**.

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