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Function

/ˈfʌŋkʃən/noun / verb
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A function is the specific role or purpose that something serves, whether it's the job of a machine part in an engine or a social event bringing people together. In modern contexts, it also describes a reusable block of code in programming that performs a defined task, making it essential for efficient problem-solving in tech and beyond.

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The mathematical function, as formalized in the 17th century by pioneers like Isaac Newton and Gottfried Wilhelm Leibniz, is the backbone of modern cryptography, with algorithms like those securing online banking relying on functions to process over 100 billion encrypted transactions daily.

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