[Home](./index.md) > [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) > [ExpressionFunctionDefinitions](./kibana-plugin-plugins-expressions-public.expressionfunctiondefinitions.md) > [derivative](./kibana-plugin-plugins-expressions-public.expressionfunctiondefinitions.derivative.md) ## ExpressionFunctionDefinitions.derivative property Signature: ```typescript derivative: ExpressionFunctionDerivative; ```