# Plot functions with Symbolic parameters

GROUPS:
 Sadi Altamimi 1 Vote Hi,In order to plot a simple function like sine we could use the following commandPlot[Sin[x],{x,0,10}]the result of course is a sine wave of magnitude 1. The qustion is what if we want to plot the sine with amplitude other than 1 but we want to leave it in general like this:Plot[A*Sin[x],{x,0,10}]In other words, I am interested in seeing 'A' on the y-axis instead of the 1. I know it will not be as what I wrote in the second line. It might be related to the axis properties but I could not figure how to do it.I need to plot this signal in this form because I am working on some tutoreials and notes for a signal processing course.Regards
4 years ago
5 Replies
 Isaac Abraham 1 Vote In order to plot, one would need a value for A. Will it be sufficient for you to use Manipulate wherein A takes on different values to show the effect of various A?Manipulate[ Plot[A Sin[x], { x, 0, 10},          (* Options 4 Plot *)          PlotRange -> {Automatic, {-2, 2}} (* End Plot *)],           {A, -2, 2, 1},           (* Options 4 Manipulate *)          ControlType -> RadioButton ]Now you can click a radiobutton to show the effect of various A. I hope this may be helpful.
4 years ago
 Thanks Issac;Consider this example, we have Pulse - Sinc fourier pair, and I am interested in showing the effect of the amplitude of the pules together with its width on the location of sinc's zeros .. in this case I need to put the symbol on the axis while hiding the actual numeric values from the axis because the actual values are not of that importance in this context.