Thanks to visit codestin.com
Credit goes to dlmf.nist.gov

About the Project
28 Mathieu Functions and Hill’s EquationMathieu Functions of Noninteger Order28.13 Graphics
Figure 28.13.3 (See in context.) 3D Help
See accompanying text
Figure 28.13.3: ceν(x,1) for 1<ν<1, 0x2π. 3D Help