I am trying solve a fluid dynamic model that has present four variables in function time. I would like to ask a help for declare this equation and solve it consequently Enjoy the opportunity to leave a example of equation in LaTeX language. In the past question that I founded, the ODE is explicity at the form dy/dx = f(x,t). However, when there are more than one variable, it brings a doubt. Thank you so much for help. PS : {A, B, C, F, R} are constants Continue reading...