ASU CSE 575 Statistical Machine Learning Graded Quiz
Week 2
1 Given two sets, A = 1, 2, 3, 4, 5, B = 1, 4, 7, 9, 10.
What is A ∩ B?
• 1, 4 ✔
• 1, 2, 3, 4, 5
• 1, 2, 3, 4, 5, 7, 9, 10
• 1, 4, 7, 9, 10
...More on the next page...
1
, 2 Consider a symmetric matrix A. What is ∂(xT Ax) ∂x ?
• xT
• 2A
• 2Ax ✔
• x
2 4
3 Given matrix X =
6 8
what is the value of trace(X)?
• 10 ✔
• 8
• 16
• 6
4 Which of the following is always correct?
• trace(X + Y )= trace(X) ∗ trace(Y)
• trace(X + Y )= trace(X) + trace(Y) ✔
• trace(X + Y )= trace(X)/trace(Y)
• trace(X + Y )= trace(X) − trace(Y)
2
Week 2
1 Given two sets, A = 1, 2, 3, 4, 5, B = 1, 4, 7, 9, 10.
What is A ∩ B?
• 1, 4 ✔
• 1, 2, 3, 4, 5
• 1, 2, 3, 4, 5, 7, 9, 10
• 1, 4, 7, 9, 10
...More on the next page...
1
, 2 Consider a symmetric matrix A. What is ∂(xT Ax) ∂x ?
• xT
• 2A
• 2Ax ✔
• x
2 4
3 Given matrix X =
6 8
what is the value of trace(X)?
• 10 ✔
• 8
• 16
• 6
4 Which of the following is always correct?
• trace(X + Y )= trace(X) ∗ trace(Y)
• trace(X + Y )= trace(X) + trace(Y) ✔
• trace(X + Y )= trace(X)/trace(Y)
• trace(X + Y )= trace(X) − trace(Y)
2
