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Saturday, 31 October

JEE Main 2021 · MathsNumerical answerNumerical valueMediumMulti-step

JEE Main 25 July 2021, Shift 2, Maths Q90

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

Consider the function f(x)={P(x)sin⁡(x−2),x≠27,x=2f(x)=\begin{cases}\dfrac{P(x)}{\sin(x-2)}, & x\ne2\\ 7, & x=2\end{cases} where P(x)P(x) is a polynomial such that P′′(x)P''(x) is always a constant and P(3)=9P(3)=9. If f(x)f(x) is continuous at x=2x=2, then P(5)P(5) is equal to __________.

Official answer

39

NTA final key.

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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.