Why can’t we simply multiply derivatives?
If the derivative of **x** is **1**, and the derivative of **sin(x)** is **cos(x)**, then why isn’t the derivative of **x·sin(x)** just **1·cos(x)**?
In this video, we uncover the problem that led to the Product Rule using a simple geometric visualization.
📌 This is **Part 1** of the Product Rule series.
▶️ Watch **Part 2** to see the complete derivation of the Product Rule.
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