An exercise asks me to determine whether the following operator is Hermitian:(adsbygoogle = window.adsbygoogle || []).push({});

[itex]

{\left( {\frac{d}{{dx}}} \right)^ * }.

[/itex]

I dont even know what that expression means.

a) Differentiate with respect to x, then take the complex conjugate of the result?

b) Take the complex conjugate, then differentiate with respect to x?

c) [itex]{\left( {\frac{d}{{dx}}} \right)^ * } = \frac{d}{{d{x^*}}} = \frac{d}{{dx}}[/itex]?

Can someone clarify?

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# I What does complex conjugate of a derivate mean?

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