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The following integral ∫ π π 2 4 17 dx ) x ec cos 2 ( is equal to

∫ + − + ) 2 1 log( 0 16 u u du ) e e ( 2
∫ + − + ) 2 1 log( 0 17 u u du ) e e (
∫ + − − ) 2 1 log( 0 17 u u du ) e e (
∫ + − − ) 2 1 log( 0 16 u u du ) e e ( 2

Correct answer: ∫ + − + ) 2 1 log( 0 16 u u du ) e e ( 2

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