Question:
\(∫e^x secx(1+tanx)dx\) equals
\(∫e^x secx(1+tanx)dx\) equals
Updated On: Mar 1, 2024
\(e^xcosx+C\)
\(e^xsecx+C\)
\(e^xsinx+C\)
\(e^xtanx+C\)
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The Correct Option is A
Solution and Explanation
The correct answer isB: \(I=e^xsecx+C\)
\(∫e^x secx(1+tanx)dx\)
Let \(I=∫e^xsecx(1+tanx)dx=∫e^x(secx+secx\,tanx)dx\)
Also,let \(secx=ƒ(x)\,\,secx\,tanx=ƒ'(x)\)
It is known that,\(∫e^x[ƒ(x)+ƒ'(x)]dx=e^xƒ(x)+C\)
\(∴I=e^xsecx+C\)
Hence,the correct answer is B.
\(∫e^x secx(1+tanx)dx\)
Let \(I=∫e^xsecx(1+tanx)dx=∫e^x(secx+secx\,tanx)dx\)
Also,let \(secx=ƒ(x)\,\,secx\,tanx=ƒ'(x)\)
It is known that,\(∫e^x[ƒ(x)+ƒ'(x)]dx=e^xƒ(x)+C\)
\(∴I=e^xsecx+C\)
Hence,the correct answer is B.
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Concepts Used:
Integration by Partial Fractions
The number of formulas used to decompose the given improper rational functions is given below. By using the given expressions, we can quickly write the integrand as a sum of proper rational functions.
For examples,
