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JEE Mains · Maths · STD 12 - 1. relation and function

माना \(\mathrm{f}(\mathrm{x})=2 \mathrm{x}^{\mathrm{n}}+\lambda, \lambda \in \mathbb{R}, \mathrm{n} \in \mathbb{N}\) और \(\mathrm{f}(4)=133, \mathrm{f}(5)=255\) है। तो \((\mathrm{f}(3)-\mathrm{f}(2))\) के सभी धनात्मक पूर्णांक भाजकों का योग है -

  1. A \(61\)
  2. B \(60\)
  3. C \(58\)
  4. D \(59\)
Verified Solution

Answer & Solution

Correct Answer

(B) \(60\)

Step-by-step Solution

Detailed explanation

\(f(x)=2 x^{ n }+\lambda\) \(f(4)=133\) \(f(5)=255\) \(133=2 \times 4^{ n }+\lambda......(1)\) \(255=2 \times 5^{ n }+\lambda......(2)\) \((2) -(1)\) \(122=2\left(5^{ n }-4^{ n }\right)\) \(\Rightarrow 5^{ n }-4^{ n }=61\) \(\therefore n =3\, and\, \lambda=5\) Now,…
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