Originally Posted by

**shawsend** __It's better if you cut and past you're code__ so that we can cut and past it directly into Mathematica. Select it, then do a Cell/Convert To/Raw Input form like I did below. Now you can just cut and paste it directly in your Mathematica and if you want convert it back to standard form.

\[CapitalLambda][t_] :=Piecewise[{{1-Abs[t],Abs[t]<= 1},{0,Abs[t]>= 1}}];

t0 = 9;

s1 = t0 - 6;

x[t_] := Exp[s1*t];

h[t_] := \[CapitalLambda][t/10];

myConvol[t_]=Integrate[x[t - \[Tau]]*h[\[Tau]],

{\[Tau], -Infinity, Infinity}]