English

∫ E X − 1 E X + 1 Dx - Mathematics

Advertisements
Advertisements

Question

\[\int\frac{e^x - 1}{e^x + 1} \text{ dx}\]
Sum
Advertisements

Solution

\[\text{ We  have, }\]
\[I = \int\frac{e^x - 1}{e^x + 1}dx\]
\[ = \int\frac{2 e^x - \left( e^x + 1 \right)}{e^x + 1}dx\]
\[ = \int\frac{2 e^x}{e^x + 1}dx - \int dx\]
\[\text{ Putting  e}^x + 1 = t\]
\[ \Rightarrow e^x dx = dt\]
\[ \therefore I = \int\frac{2}{t}dt - \int dx\]
\[ = 2 \text{ log } \left| t \right| - x + C\]
\[ = 2 \text{ log} \left| e^x + 1 \right| - x + C\]
\[ = 2 \text{ log }\left( e^x + 1 \right) - x + C\]

shaalaa.com
  Is there an error in this question or solution?
Chapter 19: Indefinite Integrals - Revision Excercise [Page 203]

APPEARS IN

RD Sharma Mathematics [English] Class 12
Chapter 19 Indefinite Integrals
Revision Excercise | Q 17 | Page 203

Video TutorialsVIEW ALL [1]

RELATED QUESTIONS

\[\int \left( \sqrt{x} - \frac{1}{\sqrt{x}} \right)^2 dx\]

\[\int \left( 3x + 4 \right)^2 dx\]

\[\int\frac{\sin^3 x - \cos^3 x}{\sin^2 x \cos^2 x} dx\]

\[\int\frac{\cos x}{1 + \cos x} dx\]

\[\int \left( e^x + 1 \right)^2 e^x dx\]

\[\int\frac{1}{\sqrt{x + 3} - \sqrt{x + 2}} dx\]

Integrate the following integrals:

\[\int\text{sin 2x  sin 4x    sin 6x  dx} \]

\[\int\frac{1 - \cot x}{1 + \cot x} dx\]

\[\int\frac{1}{x (3 + \log x)} dx\]

\[\int\frac{\cos\sqrt{x}}{\sqrt{x}} dx\]

\[\int \tan^3 \text{2x sec 2x dx}\]

\[\int \sec^4 2x \text{ dx }\]

\[\int\frac{1}{\sin^4 x \cos^2 x} dx\]

\[\int\frac{1}{a^2 - b^2 x^2} dx\]

\[\int\frac{1}{\sqrt{a^2 - b^2 x^2}} dx\]

\[\int\frac{1}{x^2 - 10x + 34} dx\]

\[\int\frac{e^x}{e^{2x} + 5 e^x + 6} dx\]

\[\int\frac{1}{\sqrt{7 - 3x - 2 x^2}} dx\]

\[\int\frac{e^x}{\sqrt{16 - e^{2x}}} dx\]

\[\int\frac{1}{x\sqrt{4 - 9 \left( \log x \right)^2}} dx\]

`int 1/(cos x - sin x)dx`

\[\int\frac{1}{2 + \sin x + \cos x} \text{ dx }\]

\[\int\frac{2 \tan x + 3}{3 \tan x + 4} \text{ dx }\]

\[\int x\ {cosec}^2 \text{ x }\ \text{ dx }\]


\[\int\frac{\log x}{x^n}\text{  dx }\]

\[\int\frac{\text{ log }\left( x + 2 \right)}{\left( x + 2 \right)^2}  \text{ dx }\]

\[\int\frac{x^3 \sin^{- 1} x^2}{\sqrt{1 - x^4}} \text{ dx }\]

\[\int e^x \frac{\left( 1 - x \right)^2}{\left( 1 + x^2 \right)^2} \text{ dx }\]

\[\int\frac{2x}{\left( x^2 + 1 \right) \left( x^2 + 3 \right)} dx\]

\[\int\frac{1}{\left( x - 1 \right) \sqrt{x^2 + 1}} \text{ dx }\]

If \[\int\frac{\sin^8 x - \cos^8 x}{1 - 2 \sin^2 x \cos^2 x} dx\]


\[\int\frac{\cos2x - \cos2\theta}{\cos x - \cos\theta}dx\] is equal to 

\[\int \sec^2 x \cos^2 2x \text{ dx }\]

\[\int \tan^3 x\ dx\]

\[\int\frac{1}{4 \sin^2 x + 4 \sin x \cos x + 5 \cos^2 x} \text{ dx }\]


\[\int\frac{1}{\sin^2 x + \sin 2x} \text{ dx }\]

\[\int x\sqrt{\frac{1 - x}{1 + x}} \text{ dx }\]

Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×