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The representations of the three functions are:
impulse(k) is the discrete time unit impulse applied at the origin.
step(k) is the discrete time unit step applied at the origin as presented in the previous section.
ramp(k) is the discrete time unit ramp applied at the origin as presented in the previous section.
The operations are:
Sum – represented by +
Subtraction – represented by –
Product of a constatn and a function – represented by *
Product of two functions – represented by .*
Time shifting of a function – f(k - ρ); ρ ∈ ℜ
In order to create a new function, y(k), the three functions can be combined and constants can be used. An example follows.
Using the proposed syntax, it is written as:
It is submitted to SciLab as:
The SciLab result in graphical format is:
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