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Solve this attached question by definite integral method

Solve this attached question by definite integral method 

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Grade:12

2 Answers

Aditya Gupta
2081 Points
5 years ago
due to technical prob answer isnt displaying
answer is 2ln3 – 3ln2
simply put y = cosx and then use partial fractions for y/(y+1)(y+2)= A/(y+1) + B/(y+2)
Aarya
14 Points
4 years ago
You can go for this easy method: Put Cos^2x =t then upper numerator will be gone in dx itself. A quadratic eqn will be there in denominator which is easy to solve

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