Spivak's proof of the chain rule in $\mathbb{R^n}$. The proof can be found on page 19.
I'm confused by the last step. "Equation 6 now follows easily."
Spivak's proof of the chain rule in $\mathbb{R^n}$. The proof can be found on page 19.
I'm confused by the last step. "Equation 6 now follows easily."