Question: Can I make variables appear in DSolve numeric output

hello boffins

if my de was soluble analytically, I would get an expression of time in terms of the other variables (V,theta,x) easily, but because it is only numerically solvable, i get an expression x(t)=proc(t)...,- the variables V and theta are mixed up in it-. Is there anyway they can appear?

I know I can put numerical values on V and Theta (and x) and solve for time (using parameters), but I don't want this, because I want this to equal another expression for time i have to find optimal V and theta, if you understand me.

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