L1_A
1. Review: Some Setting in the Last Semester
1. Review: Some Setting in the Last Semester
2. Example: The Surface Given by z=h(x,y) with K(p)>0
L1_B
1. Example: The Surface Given by z=h(x,y) with K(p)<0
2. Example: The Surface Given by z=h(x,y) with K(p)=0
L1_C
1. Example: Torus and Monkey Saddle