Plotting a series of piecewise functions

*To*: mathgroup at smc.vnet.net*Subject*: [mg88905] Plotting a series of piecewise functions*From*: Claus <clausenator at gmail.com>*Date*: Wed, 21 May 2008 14:48:08 -0400 (EDT)*Organization*: Comp.Center (RUS), U of Stuttgart, FRG

Hi, I want to plot a series of functions. Namely I want to plot a series of 2-parametric exponential distribution functions. By series I mean the graphs for various xo values on one plot. So, the function looks like this: f[lambda_, xo_, x_]:=lambda*Exp[-lambda*(x-xo)] Now I can plot this (wrongly) with Plot[Evaluate[Table[f[lambda,xo,x],{lambda,0.5,0.5},{x0,4}]],{x,0,10}] The problem is that, really, f should be zero for x<xo. I can plot one graph (for xo=1 and lambda=1) like this: Plot[Piecewise[{{f[0.5,1,x],x>1},{0,x<1}}],{x,0,10}] Now, how could I plot a series of plots (for different xo) on one chart similarly to the Piecwise approach (can I do it with Piecewise at all, or do I need an If clause of sorts)? Thank you for your help, Claus