phi (x,y,z) = exp (-(x/x0) + (y/y0)) + (z/z0)
How do you write above function in terms of individual (x,y,z)?
x=
y=
z=
what do you mean? phi is a function of three variables. It could be written as
1/e^(x/x0) * 1/e^(y/y0) * e^(z/z0)
But I have no idea what you mean when you say to express it in terms of "individual (x,y,z)"