Find the derivative of the function. 
Definitions:
Irreversible Behaviors
Actions or patterns of activity that, once established, cannot be easily changed or undone.
Intervention Independence
The degree to which a person can maintain behavioral changes or improvements without continuous external support or intervention.
Graph Behavior
The representation of behavioral data visually on a graph to analyze trends, patterns, or changes over time.
Multiple Probe Technique
A method in behavioral analysis used to examine the effectiveness of an intervention across multiple behaviors, settings, or subjects.
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