polar form
File in which the problem appears
Complex numbers, the polar form
Problematic sentence
Some useful values of the complex exponential to know by heart are e2iπ=1, eiπ=−1 and eiπ/2=i. From the first expression, it also follows that ei(y+2πn)=eiπ for n∈Z
Correct version
ei(y+2πn)=eiy for n∈Z