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Friday, 9 October

JEE Main 2024 · MathsNumerical answerNumerical valueHardMulti-step

JEE Main 9 April 2024, Shift 1, Maths Q24

Question 24 of 90 in this shift, Maths question 24 of 30, Section B.

Let f:(0,π)→Rf:(0,\pi)\to\mathbf{R} be a function given by f(x)={(87)tan⁡8xtan⁡7x,0<x<π2a−8,x=π2(1+∣cot⁡x∣)ba∣tan⁡x∣,π2<x<πf(x)=\begin{cases}\left(\frac{8}{7}\right)^{\frac{\tan 8x}{\tan 7x}}, & 0<x<\frac{\pi}{2}\\ a-8, & x=\frac{\pi}{2}\\ (1+|\cot x|)^{\frac{b}{a}|\tan x|}, & \frac{\pi}{2}<x<\pi\end{cases} where a,b∈Za,b\in\mathbf{Z}. If ff is continuous at x=π2x=\frac{\pi}{2}, then a2+b2a^2+b^2 is equal to ________.

Official answer

81

NTA final key.

Same idea in other shifts

Asked 2× in all
  1. 3 Aug 2021, Shift 2 · Q69If for non-zero distinct real numbers aa, bb and cc,…MediumSingle 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 42 of the 174 JEE Main shifts held from 2017 to 2026.