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7.1.7. Dependent vs Independent

Expression variables fall into the categories independent or dependent. Independent variables are constant meaning their expressions contain numbers, operators, functions or constants but no user defined variables. On the other hand dependent variables use other user variables in their expressions. In the figure above variable a has Expression b + 5. Variable a depends on variable b therefore a is a dependent variable. Variable b has the Expression 2 which is a numerical constant making b an independent variable.

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