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MathGroup Archive 2002

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Convolution problem

  • To: mathgroup at
  • Subject: [mg35004] Convolution problem
  • From: "J. Guillermo Sanchez" <guillerm at>
  • Date: Wed, 19 Jun 2002 05:52:38 -0400 (EDT)
  • Sender: owner-wri-mathgroup at

The convolution integral is given by

c[t_] = Integrate[g[t - T]*i[T], {T, 0, t}] (*eq. 1*)

We suposse that g[t] is known and it is given by

g[t_] = 2.1 Exp[- 0.1*t]  -  1.4 Exp[-0.3*t];

The experimetal data of c(ti) are {ti, c(ti)}

data =
{18`,0.219`},{19`,0.195`},{20, 0.18`},{22`,0.149`},{24`, 0.118`},{26`,0.096`},

I would like to obtain de numeric values for i(t), I mean the 
deconcolution of eq.1. How can I do ?


Guillermo Sanchez

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