Using conclusions from previous posts, the following nine derivatives have been determined. $\frac{dx(r)}{dr}\big|_{r^+}=\sin\theta\cos\phi$ $\frac{dy(r)}{dr}\big|_{r^+} = […]
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How to Use the Product Rule
I would like to evaluate two more derivatives. They are $ \frac{dx}{d\phi}\big|_{\phi^+} $ and $ […]
Differentiating the Cosine Function
In this post, the derivative of the cosine function is found. To do this, the […]
Proving the Chain Rule
In this post, the chain rule is proved. This rule frequently appears in Calculus. Recall from this […]