Exponential transfer function

Hi,

It is known to me that a transfer function with a delay [for example: exp(-2*s)] can be written as tf([1],[0 1],'inputdelay',2). But how one can write a transfer function like exp(2*s) in Matlab or Simulink?

Your kind help will be very much appreciated.

Answer 1

[Arkadiy Turevskiy]

The delay has to be a positive number - otherwise you get a noncasual system. Arkadiy