How to plot two functions in one graph to demonstrate comparison

this is the private functions and the separated plotting for each, and i want to plot both of them under one graph. i couldnt do it

methods (Access = private)
        
        function AcVoltage(app,Vrms,F,T) 
          AC_Voltage = ((Vrms) * sin((2)*(pi*F)*(T)));  % this function is for input voltage sine wave demonstration
          plot(app.UIAxes,AC_Voltage)
          app.UIAxes.Title.String = 'AC Input Voltage';
          app.UIAxes.YLabel.String = 'Vrms';
         end  
        function Output_Voltage(app,Vdc,F,T)
          DC_Voltage = ((Vdc) * sin((2)*(pi*F)*(T))); %testing the code NOT the Actual[for testing]
          idx = DC_Voltage>=0;
          plot(app.UIAxes,DC_Voltage(idx))
          app.UIAxes.Title.String = 'Rectified DC Voltage';
          app.UIAxes.YLabel.String = 'Vdc';
        end

[Alan Stevens]

Have you tried

hold on

after the first plot?

[ALI DRIDI]

yes but it shows the DC_Voltage = ((Vdc) * sin((2)*(pi*F)*(T))); plotting g1raph only

[dpb]

There's no "hold on" anywhere in the code -- both of those will plot the given data as new plot on the axes.

You need to create the axes, save the handle to it, set hold on to add plots to existing axis and then plot...With GUIS I don't know much ... to just plot you'd do something like

function plotStuff(app,Vrms,Vdc,F,T)
  AcVoltage(app,Vrms,F,T) 
  hold(app.UIAxes,'on')
  Output_Voltage(app,Vdc,F,T)
end