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Saturday, 31 October

JEE Main 2022 · MathsMultiple choiceSingle correctMediumApplication

JEE Main 25 July 2022, Shift 1, Maths Q6

Question 6 of 90 in this shift, Maths question 6 of 30, Section A.

If the absolute maximum value of the function f(x)=(x2−2x+7) e(4x3−12x2−180x+31)f(x)=(x^2-2x+7)\,\mathrm{e}^{(4x^3-12x^2-180x+31)} in the interval [−3,0][-3,0] is f(α)f(\alpha), then :
  1. (1)α=0\alpha=0
  2. (2)α=−3\alpha=-3Official answer
  3. (3)α∈(−1,0)\alpha\in(-1,0)
  4. (4)α∈(−3,−1]\alpha\in(-3,-1]

Official answer

Option 2

NTA final key (2022 Session 2).

Same idea in other shifts

Asked 8× in all
  1. 4 Apr 2026, Shift 2 · Q12max⁡0≤x≤π(16sin⁡(x2)cos⁡3(x2))\max_{0\le x\le\pi}\left(16\sin\left(\frac x2\right)\cos^3\left(\frac x2\right)\right) is equal to:MediumSingle correct
  2. 7 Apr 2025, Shift 1 · Q17Let x=−1x = -1 and x=2x = 2 be the critical points of the function f(x)=x3+ax2+blog⁡e∣x∣+1f(x) = x^3 + ax^2 + b\log_e|x| + 1, x≠0x \neq 0. Let mm and MM…MediumSingle correct
  3. 30 Jan 2024, Shift 2 · Q9Let f(x)=(x+3)2(x−2)3f(x) = (x+3)^2 (x-2)^3, x∈[−4,4]x \in [-4, 4]. If MM and mm are the maximum and minimum values of ff, respectively in [−4,4][-4, 4], then…MediumSingle correct
  4. 13 Apr 2023, Shift 1 · Q10max⁡0≤x≤π{x−2sin⁡xcos⁡x+13sin⁡3x}=\max_{0\leq x\leq\pi}\left\{x-2\sin x\cos x+\frac{1}{3}\sin 3x\right\}=HardSingle correct
  5. 28 Jul 2022, Shift 2 · Q67The sum of the absolute maximum and absolute minimum values of the function f(x)=tan⁡−1(sin⁡x−cos⁡x)f(x)=\tan^{-1}(\sin x-\cos x) in the interval [0, π][0,\ \pi] is :MediumSingle correct
  6. 24 Jun 2022, Shift 1 · Q12The sum of absolute maximum and absolute minimum values of the function f(x)=∣2x2+3x−2∣+sin⁡xcos⁡xf(x)=|2x^2+3x-2|+\sin x\cos x in the interval [0,1][0, 1] is :HardSingle correct
  7. 17 Mar 2021, Shift 2 · Q85Let f:[−1,1]→Rf:[-1, 1]\to\mathbf{R} be defined as f(x)=ax2+bx+cf(x)=ax^2+bx+c for all x∈[−1,1]x\in[-1, 1], where a,b,c∈Ra, b, c\in\mathbf{R} such that f(−1)=2f(-1)=2,…MediumNumerical value

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.