Unit 1, Day 9

Agenda

1. Number talk: Number Strings
2. Compare and name it: Derivatives from First Principles — the quotient, the cancellation, and only then the limit
3. At the boards: $f(x)=x^2$ derived in full, every step said aloud

Things to do before our next class

• Derive $f^{\prime }(x)$ for $f(x)=x^3$, from the definition.