1-23

• 0:15:24: Q1 what is the dim of vT v? ANS: 1x1

• 0:20:47: Q2 what is the dimension of the product? ANS: 2x2

• 0:33:52: Q4 what is partial f/ partial x_1 ANS: x2^2*x3

• 0:37:13: Q5 gradient again? ANS: [0,0,2]^T

• 0:58:15: Q6 what is (AB)^T? ANS:1

• 1:04:40: Q7 what is gradient of f? ANS: Vector A