how to plot function with 2 variables? using fsolve or bisection ?

Y=(M_1-M_2^2)*Y^3+ 2X^2 (chi(1-M_1^2)- M_1*M_2)(chi*Y^2(1-M_2^2)+(2M_1+M_2)^Y-2chi*X^2+1=0

where

M_1-M_2=0.1

chi=0.5

X>0

Answer 1

[Torsten]

Use "fimplicit":

https://uk.mathworks.com/help/matlab/ref/fimplicit.html