Recitation 4ans - Recitation 4 Answers 1 a,b,c eit = 1...

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Recitation 4 Answers 1. a,b,c. e it = 1 + it + it ( ) 2 2! + it ( ) 3 3! + it ( ) 4 4! + it ( ) 5 5! + ... = 1 t 2 2! + t 4 4! ... + i t t 3 3! + t 5 5! ... = cos t + i sin t d. e it = cos t i sin t 2 a. cos t = e it + e it 2 sin t = e it e it 2 i b. cos iy ( ) = e y + e y 2 sin iy ( ) = e y
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