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 # getVariableEquation

 Last update: 18.06.2026 

abstract fun [getVariableEquation](get-variable-equation.md)(index: [Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)): [String](https://docs.oracle.com/javase/8/docs/api/java/lang/String.html)

Get the equation for the variable with the specified index.

#### Return

the equation

#### Parameters

indexthe index#### Throws

[IndexOutOfBoundsException](https://docs.oracle.com/javase/8/docs/api/java/lang/IndexOutOfBoundsException.html)if the index is not valid