Either I have my math wrong, or there’s nothing wrong with saying that there is a function F(r,t(r)) where t(r) is a function read off r which signifies… well, time. And while F(r,t(r)) is a function of r, it may be more useful for some problems to have it as initially written not F’(r) (for example, because t(r) may have an obvious GLUT).
Either I have my math wrong, or there’s nothing wrong with saying that there is a function F(r,t(r)) where t(r) is a function read off r which signifies… well, time. And while F(r,t(r)) is a function of r, it may be more useful for some problems to have it as initially written not F’(r) (for example, because t(r) may have an obvious GLUT).