Question: Plotting numerous graphics on the same picture

OK, I want to plot 10-15 curves on the same coordinate system P. I generate and put the equations of said curves in an array with a procedure, but when plotting the array, I receive an array of plots, instead of the 10 curves on one coordinate system. Any ideas how can I do that?

 

The obvious solution, something like P:=plot (something) Q:=plot(other thing) display({P,Q}) obviously doesn't work for me.

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