# Power Rule for Derivatives/Historical Note

The Power Rule for Derivatives was stated, without proof or explanation, by Gottfried Wilhelm von Leibniz in his $1684$ article Nova Methodus pro Maximis et Minimis, published in Acta Eruditorum.
Isaac Newton had established exactly the same result in a privately circulated paper of $1669$: On Analysis by Means of Equations with an Infinite Number of Terms, by investigation the nature of a function whose area under the graph is $x^m$.