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The integral ∫ π + 4 0 x cos 5 x sin 3 x sin 136 dx is equal to :

1. 3 π – 50 log e 2 + 20 log e 5
2. 3 π – 25 log e 2 + 10 log e 5
3. 3 π – 10 log e ) 2 2 ( + 10 log e 5
4. 3 π – 30 log e 2 + 20 log e 5

Correct answer: 3 π – 50 log e 2 + 20 log e 5

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