- Which topics from calc 3 and linear algebra were a part of today's homework reading?
- dot product and cross product
- eigenvalues
- directional derivative
- more than one of the above, but not all
- all of the above

e)

cross:

U in various places

U x T in 5.1.6

derive of alpha' x U in the information about geodesics on a sphere in 5.1.8

dot

E, F, G,

derivatives of various vectors dotted with U

eigenvalues

Shape operator has real eigenvalues. Book reviews material from linear including det, trace, eigevalues, eigenvectors, linear transformation

directional derivative

derivatives of E and F wrt u-directional derivative in the x_u direction