Question 64Asked in BPSC TRE 1.0 (2023) Mathematics Class 11-12

An appropriate substitution for the integral ∫ (1 + x^(1/2))/(1 + x^(1/3)) dx isसमाकल ∫ (1 + x^(1/2))/(1 + x^(1/3)) dx के लिए उपयुक्त प्रतिस्थापन है

समाकल ∫ (1 + x^(1/2))/(1 + x^(1/3)) dx के लिए उपयुक्त प्रतिस्थापन है
  1. Ax = t²x = t²
  2. Bx = t³x = t³
  3. Cx = t⁶x = t⁶
  4. DMore than one of the aboveउपर्युक्त में से एक से अधिक
  5. ENone of the aboveउपर्युक्त में से कोई नहीं
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Correct answer: (C) x = t⁶x = t⁶

Explanation

The LCM of the root indices 2 and 3 is 6, so x = t⁶ turns x^(1/2) and x^(1/3) into t³ and t², making the integrand rational.मूल-घातांकों 2 और 3 का ल.स. 6 है, इसलिए x = t⁶ रखने पर x^(1/2) और x^(1/3) क्रमशः t³ और t² बन जाते हैं और समाकल्य परिमेय हो जाता है।

From BPSC TRE 1.0 (2023) Mathematics Class 11-12 — Previous Year Paper

This is question 64 of BPSC TRE 1.0 (2023) Mathematics Class 11-12 — Previous Year Paper. See all questions of this paper with answers, or attempt the paper as a timed online test to get your score and all-India rank.