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Archive for February 18th, 2007

Friday Random 10 (late)

Sorry I missed Friday’s Random 10. That makes this, technically, a Monday Random 10 but we’ll overlook it this once. [...]

We finished the concept of directional derivatives, introducing the notation for the gradient of a function of several variables. We proved the formula of the maximum value of the directional derivative, as well as the direction for which it is maximized.

Thursday morning, three students presented homework problems at the board. I followed this with a lecture introducing the concepts of supremum and infimum of a set. Because I got a little sidetracked, I did not quite make it to the Completeness Axiom.

Today, in class, I answered some homework questions from Section 1.4, including the following problems: [...]

Mistakes

Mistakes: Your life . . .