Teaching MPPSC Assistant Professor Mock Test Series 2025 Engineering Mathematics Complex Variables Singularities
The nature of singularity of function \(f\left( z \right)=\frac{1}{\cos z-\sin z}\) at \(z=\frac{\pi }{4}\) is
1
Removable singularity
2
Isolated singularity
3
Simple pole
4
Essential singularity