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Integrate cos 2x/(cosx+sinx)^2.. ....????..................

Integrate cos 2x/(cosx+sinx)^2.. ....????..................

Grade:12th pass

3 Answers

Anish Singhal
askIITians Faculty 1194 Points
3 years ago
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Nikita Singh
25 Points
3 years ago
Sir but the answer given at the back of the book is log|cos x + sin x | +C.. I have understood your concept but why answers are not matching.. Please help me sir
Amit
405 Points
3 years ago
Hi there . In indefinite integration it is possible for a ques to have different answers both will be correct if method is correct. for your answer you can put cosx+Sinx =t and you can find its derivative in numerator ..hence answer is log|cosx+Sinx| +C

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