You have not defined theta and delta.
theta does not depend on rho1, so you can calculate it directly in front of the solve block.
You then have to provide a guess for delta and let the solve block solve for delta, too.
As delta and rho are of different dimensions you have to assign the result of find to a 2x1 vector as Mathcad can't display arrays with elements of different dimensions (in your case kg/m^3 and unitless).
You have not defined theta and delta.
theta does not depend on rho1, so you can calculate it directly in front of the solve block.
You then have to provide a guess for delta and let the solve block solve for delta, too.
As delta and rho are of different dimensions you have to assign the result of find to a 2x1 vector as Mathcad can't display arrays with elements of different dimensions (in your case kg/m^3 and unitless).
Thank you Werner.
However, the solution can't be right as it returns a negative density. When I try to force it to be positive by using rho1 > 0 and delta > 0 then the solve block doesn't converge. any idea how to remedy this?
Raiko
Ignore my last request. I found my error. Thanks for the help.
Raiko
I already guessed that a negative result is not what you are after, but I was not able to spot an obvious error in your equation.
BTW, as you already have defined theta=T1/Tk, why don't you use theta on the LHS of your equation instead of T1/Tk and Tk/T1 ?