समाकल \(x\over cos^2 x\) का मान किसके बराबर है?

This question was previously asked in
ISRO LPSC Technical Assistant Mechanical 23 Feb 2020 Official Paper
View all ISRO Technical Assistant Papers >
  1. x tan x
  2. log cos x
  3. x tan x + log (cos x)
  4. x tan x - log cos x

Answer (Detailed Solution Below)

Option 3 : x tan x + log (cos x)
Free
ISRO Technical Assistant Mechanical Full Mock Test
2.7 K Users
80 Questions 80 Marks 90 Mins

Detailed Solution

Download Solution PDF

अवधारणा:

त्रिकोणमितीय अनुपात मौलिक सर्वसमिकाएँ

\(\sec x ={1\over \cos x}\)

खंडशः समाकलन

जब u और v, x के फलन हैं तो

\(\smallint u× v~dx = u\smallint vdx - \smallint \left[ {\frac{{du}}{{dx}}\smallint vdx} \right]dx\)

मानक फलन का समाकल

\(\smallint \sec^2(ax +b) dx=\tan (ax+b)\)

\(\smallint\tan x dx= log |\sec x|=-log~cos x\)

मानक फलन का अवकलज

\(\frac{{d}}{{dx}}(x^n)=nx^{n-1}\)

\(\frac{{d}}{{dx}}(x)=1\)

गणना:

दिया हुआ:

हमारे पास \(x\over cos^2 x\) है

जहाँ u = x और \(v ={1\over cos^2 x}= sec^2 x\)

खंडशः समाकलन

जब u और v x के फलन हैं तो

खंडशः समाकलन

जब u और v x के फलन हैं तो

\(\smallint u× v~dx = u\smallint vdx - \smallint \left[ {\frac{{du}}{{dx}}\smallint vdx} \right]dx\)

\(\smallint x× sec^2 x~dx = x\smallint sec^2 x~dx - \smallint \left[ {\frac{{d}}{{dx}}x\smallint sec^2x~dx} \right]dx\)

\(\smallint x× sec^2 x~dx = x \tan x~dx - \smallint \tan x dx\)

∫x × sec2 x dx = x tan x - ∫ tan x dx

∫x × sec2 x dx = x tan x - (-log (cos x))

∫ x × sec2 x dx = x tan x + log (cos x)

Latest ISRO Technical Assistant Updates

Last updated on May 30, 2025

-> The ISRO Technical Assistant recruitment 2025 notification has been released at the official website. 

-> Candidates can apply for ISRO recruitment 2025 for Technical Assistant from June 4 to 18.

-> A total of 83 vacancies have been announced for the post of Technical Assistant.

-> The Selection process consists of a written test and a Skill test.

-> Candidates can also practice through ISRO Technical Assistant Electrical Test Series, ISRO Technical Assistant Electronics Test Series, and ISRO Technical Assistant Mechanical Test Series to improve their preparation and increase the chance of selection. 

More Definite Integrals Questions

More Calculus Questions

Get Free Access Now
Hot Links: teen patti gold download apk teen patti comfun card online teen patti master apk teen patti 100 bonus