Quick question:
Wolfram Alpha tells me that
$$\int |e^{ix}|^2 dx = x + C$$
Why is that?
2026-04-13 21:03:17.1776114197
Why is $\int |e^{ix}|^2 dx = x + C$?
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Because $$|e^{ix}|=1$$ for every $x \in \mathbb{R}$.