Using this table  for Z Transforms with Discrete Indices
Shortened 2-page pdf of Laplace Transforms and Properties
Shortened 2-page pdf of Z Transforms and Properties
All time domain functions are implicitly=0 for t<0 (i.e. they are multiplied by unit step).
Shortened 2-page pdf of Laplace Transforms and Properties
Shortened 2-page pdf of Z Transforms and Properties
All time domain functions are implicitly=0 for t<0 (i.e. they are multiplied by unit step).
| Entry | Laplace Domain | Time Domain (note) | Z Domain (t=kT) | 
|---|---|---|---|
| unit impulse |   |  unit impulse |  | 
| unit step |  |  (note) |  | 
| ramp |  |  |  | 
| parabola |  |  |  | 
| tn (n is integer) |  |  | |
| exponential |  |  |  | 
| power |  |  | |
| time multiplied exponential |  |  |  | 
| Asymptotic exponential |  |  |  | 
| double exponential |  |  |  | 
| asymptotic double exponential |  |  | |
| asymptotic critically damped |  |  | |
| differentiated critically damped |  |  | |
| sine |  |  |  | 
| cosine |  |  |  | 
| decaying sine |  |  |  | 
| decaying cosine |  |  |  | 
| generic decaying oscillatory |  |  | |
| generic decaying oscillatory (alternate) |  |    (note) | |
| Z-domain generic decaying oscillatory |   (note) |  | |
| Prototype Second Order System (ΞΆ<1, underdampded) | |||
| Prototype 2nd order lopass step response |  |   |  | 
| Prototype 2nd order lopass impulse response |  |  |  | 
| Prototype 2nd order bandpass impulse response |  |  |  | 
Using this table for Z Transforms with discrete indices
Commonly the "time domain" function is given in terms of a discrete index, k, rather than time. This is easily accommodated by the table. For example if you are given a function:
Since t=kT, simply replace k in the function definition by k=t/T.   So, in this case,

and we can use the table entry for the ramp

The answer is then easily obtained
 
  
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