Complex Analysis 13: Residues part 1, essential singularities

Residues: part 1 (essential singularities)

[maxvanleeuwen]

Your factorial sign looks too much like an i, which is confusing in complex analysis. Other than that great video!

[atomicgeneral]

Perhaps write factorial so it does not look like an "i". confusing.

[atayavuzz]

shouldnt be the second example answer 1/2 instead of -1/2 since we have a z multiplied with the second term ??

[resultsfitnessco]

so when z=0 it is like z disappears, not like the function being multiplied by zero?

[nagendras]

Has he taught topics other than complex analysis?

[dharapatel]

Can we identify essential singularity of function without expanding function in series form?

[mantavyaagarwal]

please solve it when it is not about z = 0

[anupam]

Wrong expansion of cosh(1/z), Please correct it.
cosh(1/z) = cos(i/z)