JEE Main 2020 · MathsMultiple choiceSingle correctEasyCalculation

JEE Main 5 September 2020, Shift 1, Maths Q62

Question 62 of 75 in this shift, Maths question 12 of 25.

The value of

\int_{-\pi/2}^{\pi/2}\frac{1}{1+e^{\sin x}}dx

is :

(1) $\frac{3\pi}{2}$
(2) $\frac{\pi}{2}$ Official answer
(3) $\frac{\pi}{4}$
(4) $\pi$

Official answer

Option 2

NTA final key (Sep 2020).

Chapter: Integrals
Topic: Definite Integral Properties
Idea tested: King's Property

Same idea in other shifts

Asked 18× in all

3 Apr 2025, Shift 2 · Q18The integral $\int_0^{\pi} \frac{8x\,dx}{4\cos^2 x + \sin^2 x}$ is equal toMediumSingle correct
8 Apr 2025, Shift 2 · Q18Let $f(x)$ be a positive function and $I_1 = \int_{-\frac{1}{2}}^{1} 2x\, f\big(2x(1-2x)\big)\,dx$ and…HardSingle correct
4 Apr 2024, Shift 1 · Q25If $\int_0^{\pi/4}\frac{\sin^2x}{1+\sin x\cos x}dx=\frac{1}{a}\log_e\left(\frac{a}{3}\right)+\frac{\pi}{b\sqrt{3}}$ , where…HardNumerical value
5 Apr 2024, Shift 1 · Q10The value of $\int_{-\pi}^{\pi}\frac{2y(1+\sin y)}{1+\cos^2 y}\,dy$ is :MediumSingle correct
5 Apr 2024, Shift 2 · Q25If $f(t) = \int_0^{\pi} \frac{2x\,dx}{1-\cos^2 t \sin^2 x}$ , $0 < t < \pi$ , then the value of…HardNumerical value
1 Feb 2024, Shift 1 · Q10The value of the intergral $\int_0^{\pi/4}\frac{x\,dx}{\sin^4(2x)+\cos^4(2x)}$ equals :HardSingle correct
1 Feb 2024, Shift 2 · Q11The value of $\int_{-0}^{1}(2x^3-3x^2-x+1)^{\frac{1}{3}}\,dx$ is equal to :MediumSingle correct
27 Jan 2024, Shift 1 · Q12If $(a, b)$ be the orthocentre of the triangle whose vertices are $(1, 2)$ , $(2, 3)$ and $(3, 1)$ , and $I_1=\int_a^b x\sin(4x-x^2)\,dx$ ,…HardSingle correct

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.