Crossword-Puzzle:

3. The ROC of a causal sequence is the________of a circle of a radius.
6. A signal must be absolutely __________for its Z transform to be defined.
8. ROC of a signal in Z domain is in shape of _______strips.
11. For a LTI system to be causal, in the expression of transfer function the degree of _______must be greater than or equal to the degree of numerator.
12. ROC can not include any ______.
13. The ROC of a non causal sequence is the________of a circle of a radius.
14. The ROC of Z transform of combination of two signals is the ________ of ROCs of the individual signals.
15. The z transform is the _______counter part of Laplace transform.

1. We can not obtain a _____sided sequence by long division.
2. DTFT is nothing but Z transform for ________circle.
4. A linear shift invariant discrete time system is represented by________equation.
5. Convolution in time domain is equivalent to ______________in frequency domain.
7. Impulse response of a stable discrete time LTI system
9. The Z transform of a unit impulse signal is__________, for all values of r.
10. Multiplication by exponential property leads to shift in _______of transform.