QC3D Graph Solver ( Quadratic Complex 3d Graph Solver ) is
3D visualizator of Quadratic Equation with complex number support
3D where axes are x, y and i
Now supports Quadratic Equation (a*x^2 b*x c=0) and Cos(z)=>Cos(x iy)
https://github.com/vadimostanin/QuadraticEquationComplexNumber3D
Function Cos(z)=>Cos(x iy) added
Qubic equation added