How can I write a program to plot this expression:
(a*z^2+c)+(a*z^2-c)*cos(2*u+m*pi)+b*z*sin(2*u+m*pi)=0
Where all of "a","b","c" and "z" parameters are known expressions and are just one variable expressions:"beta". And you is an expression of "lambda", so the main equation is an implicit expression of(lambda and beta).