Hi, I'm trying to put on Mathematica a graph of my model that is displaying a piecewise function with specific parameters. The aims being to see how the parameters will affect the graph I wanted to do it on Mathematica with manipulate. I join the Mathematica file to my question hopping one can tell me why I cannot see anything else than a blank sheet. I tried to do it in two stages as my tries in once were giving something worst. Thanks in advance for any advice that I might use!
This is the piecewise function I need to graph.
 
fb[Fc_] := 
 Piecewise[{{a^2 (1 + \[Beta] (1 - p))/
     2 (1/(2 (b + cB + \[Tau]*\[Theta]B)) - 1/(
       2 (b + cA + \[Tau]*\[Theta]A))), 
    0 <= Fc <= 
     a^2/2 (1/(2 (b + cC + \[Tau]*\[Theta]C)) - 1/(
        2 (b + cB + \[Tau]*\[Theta]B)))}, {a^2 ((1 + \[Beta])/(
        2 (b + cB + \[Tau]*\[Theta]B)) - (1 + \[Beta] (1 - p))/(
        2 (b + cA + \[Tau]*\[Theta]A)) - (\[Beta]* p)/(
        2 (b + cC + \[Tau]*\[Theta]C))) + \[Beta] *p*Fc, 
    a^2/2 (1/(2 (b + cC + \[Tau]*\[Theta]C)) - 1/(
        2 (b + cB + \[Tau]*\[Theta]B))) < Fc <= 
     a^2/2 (1/(2 (b + cC + \[Tau]*\[Theta]C)) - 1/(
        2 (b + cA + \[Tau]*\[Theta]A)))}}]
And this is how I try to plot it:
 
Manipulate[
 Plot[fb[Fc_], {Fc, 0, 
   a^2/2 (1/(2 (b + cC + \[Tau]*\[Theta]C)) - 1/(
      2 (b + cA + \[Tau]*\[Theta]A)))}], {a, 1, 5}, {\[Theta]A, 0, 
  1}, {\[Theta]B, 0, 1}, {\[Theta]C, 0, 1}, {\[Tau], 0, 3}, {cA, 2, 
  3}, {cB, 1, 2}, {cC, 0, 1}, {b, 0, 1}, {p, 0, 1}, {\[Beta], 0, 1}]
				
					
				
				
					
					
						
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