bonjour, is there a way(*) to solve a complex equation with conjugate as : solve([conjugate(z)-3*%i*z-3+6*%i=0], [z]); wich give a wrong solution [z=(6*%i-3)/(3*%i-1)] merci :-) jean-pierre ps : another way as to solve as linear system the real part and the imagpart of the equation