During the late seventeenth century, Isaac Newton and Gottfried Leibniz separately formulated calculus, a method for analyzing functional change rates. Yet informally, calculus had existed for centuries. Indeed, Archimedes practiced proto-calculus in the third century BCE. To compute circular areas, he initially examined polygons — shapes with straight sides. By employing polygons with increasing side counts, he approximated a limit: the circle's area. Newton and Leibniz adopted comparable limit-based approaches to comprehend change.
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