## 2018-11-28

I continued thinking about the chain rule and working on the page for it (in particular, adding the limits of sequence proof).

I also returned to thinking about proving the continuity of $f(x) := a^x$ (for fixed $a > 0$). (I know there is an $(\epsilon, \delta)$ proof to show continuity at zero, but I was wondering if I could do it using the squeeze theorem for sequences. I wasn’t able to find a satisfactory proof for this.)

I also thought a bit about the method of finding the inverse of a matrix by solving equations $Ax = e_j$.

I also asked a question on Math Stack Exchange.

I also posted a comment on LessWrong about an exercise in volume II of Analysis.

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