JEE Main 2023 · MathsNumerical answerNumerical valueHardMulti-step

JEE Main 13 April 2023, Shift 2, Maths Q25

Question 25 of 90 in this shift, Maths question 25 of 30, Section B.

Let

f(x)=\sum_{k=1}^{10}k\,x^k

x\in\mathbb{R}

. If

2f(2)+f'(2)=119(2)^n+1

then

n

is equal to ______

Official answer

NTA final key.

Chapter: Limits and Derivatives
Topic: Arithmetico-Geometric Series
Idea tested: Derivative Method for AGP Sums

Same topic in other shifts

All Arithmetico-Geometric Series questions

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8 Apr 2023, Shift 2 · Q17If the probability that the random variable $X$ takes values $x$ is given by $P(X = x) = k(x + 1)3^{-x}$ , $x = 0, 1, 2, 3, \ldots$ , where…MediumSingle correct
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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.