This C#m11 has the root (C#) at the bottom, so it isn’t a slash chord. However, if we look at the two lowest notes, C# and E, we have the root and b3rd, which set this up as some kind of C# minor.

Harmonic minor keys are used when writing chords. There is another version of the minor key known as the melodic minor. This is used when writing a melody. Each key signature has two possible keys ...

This C#m11 has the root (C#) at the bottom, so it isn’t a slash chord. However, if we look at the two lowest notes, C# and E, we have the root and b3rd, which set this up as some kind of C# minor.