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

જો \(f(x) = 2^{10}\cdot x + 1\) અને \(g(x) = 3^{10}\cdot x - 1\) અને  \((fog)(x)=x\) હોય તો  \(x\) મેળવો.

  1. A \(\frac{{{3^{10}} - 1}}{{{3^{10}} - {2^{ - 10}}}}\)
  2. B \(\frac{{{2^{10}} - 1}}{{{2^{10}} - {3^{ - 10}}}}\)
  3. C \(\frac{{1 - {3^{ - 10}}}}{{{2^{10}} - {3^{ - 10}}}}\)
  4. D \(\frac{{1 - {2^{ - 10}}}}{{{3^{10}} - {2^{ - 10}}}}\)
Verified Solution

Answer & Solution

Correct Answer

(D) \(\frac{{1 - {2^{ - 10}}}}{{{3^{10}} - {2^{ - 10}}}}\)

Step-by-step Solution

Detailed explanation

\(f\left( {g\left( x \right)} \right) = x\) \( \Rightarrow f\left( {{3^{10}}x - 1} \right) = {2^{10}}\left( {{3^{10}}.x - 1} \right) + 1 = x\) \( \Rightarrow {2^{10}}\left( {{3^{10}}x - 1} \right) + 1 = x\) \( \Rightarrow x\left( {{6^{10}} - 1} \right) = {2^{10}} - 1\)…
Same subject
Explore more questions on app
From JEE Mains
Explore more questions on app