For linear dynamic circuits, the condition of the index to be higher than o
ne is calculated symbolically. Using Analog Insydes a function for the comp
uter algebra system Mathematica is written. It calculates the index conditi
on if the sparse tableau analysis method is applied to the circuit. Example
s illustrate the performance of the method. (C) 2000 IMACS. Published by El
sevier Science B.V. All rights reserved.