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[[Category:Analytica User Guide]]
<breadcrumbs>Analytica User Guide > Dynamic Simulation > {{PAGENAME}}</breadcrumbs>


The initial value of a dynamic variable — that is, the first parameter to the Dynamic() function — can be a number, variable identifier, or other expression that evaluates to a single number, list, or array. Analytica evaluates a dynamic variable starting from each initial value, in each time period, so the result is a correctly dimensioned array.

'''Example:''' Expanding the example (see “[[Using the Dynamic() function]]” on page 322), suppose the inflation rate of gasoline is uncertain. Instead of providing a single numerical value, you could define the inflation rate as a list.

[[File:Chapter15_11.png]]

Using the new Inflation variable in the definition for Gasprice, the results show three different rates of increases in gasoline prices from 1990 to 1994:

 Gasprice:
 Dynamic(1.2, Gasprice[Time - 1]*(1 + Inflation)) &rarr;

[[File:Chapter15_12.png]]

==See Also==
<footer>Dynamic initial values / {{PAGENAME}} / Dynamic dependencies</footer>