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Saturday, 31 October

JEE Main 2024 · MathsNumerical answerNumerical valueHardMulti-step

JEE Main 27 January 2024, Shift 1, Maths Q27

Question 27 of 90 in this shift, Maths question 27 of 30, Section B.

If the solution of the differential equation (2x+3y−2) dx+(4x+6y−7) dy=0(2x+3y-2)\,dx+(4x+6y-7)\,dy=0, y(0)=3y(0)=3, is αx+βy+3log⁡e∣2x+3y−γ∣=6\alpha x+\beta y+3\log_e|2x+3y-\gamma|=6, then α+2β+3γ\alpha+2\beta+3\gamma is equal to ________.

Official answer

29

NTA final key.

Same topic in other shifts

All Variable Separable Form questions
  1. 2 Apr 2026, Shift 1 · Q17If the curve y=f(x)y=f(x) passes through the point (1,e)(1, e) and satisfies the differential equation dy=y(2+log⁡ex) dxdy=y(2+\log_e x)\,dx, x>0x>0, then f(e)f(e)…EasySingle correct
  2. 4 Apr 2026, Shift 1 · Q20Let y=y(x)y=y(x) be the solution of the differential equation dydx=(1+x+x2)(1−y+y2)\frac{dy}{dx}=(1+x+x^2)(1-y+y^2), y(0)=12y(0)=\frac12. Then (2y(1)−1)(2y(1)-1) is equal toMediumSingle correct
  3. 4 Apr 2024, Shift 1 · Q14If the solution y=y(x)y=y(x) of the differential equation (x4+2x3+3x2+2x+2)dy−(2x2+2x+3)dx=0(x^4+2x^3+3x^2+2x+2)dy-(2x^2+2x+3)dx=0 satisfies y(−1)=−π4y(-1)=-\frac{\pi}{4}, then…HardSingle correct
  4. 4 Apr 2024, Shift 2 · Q27Let y=y(x)y=y(x) be the solution of the differential equation (x+y+2)2dx=dy(x+y+2)^2dx=dy, y(0)=−2y(0)=-2. Let the maximum and minimum values of the function…HardNumerical value
  5. 6 Apr 2024, Shift 2 · Q26If the solution y(x)y(x) of the given differential equation (ey+1)cos⁡x dx+eysin⁡x dy=0(e^y+1)\cos x\,dx+e^y\sin x\,dy=0 passes through the point…EasyNumerical value
  6. 8 Apr 2024, Shift 1 · Q13Let y=y(x)y=y(x) be the solution of the differential equation (1+y2)etan⁡xdx+cos⁡2x (1+e2tan⁡x)dy=0(1+y^2)e^{\tan x}dx+\cos^2x\,(1+e^{2\tan x})dy=0, y(0)=1y(0)=1. Then…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 108 of the 174 JEE Main shifts held from 2017 to 2026.