Dr. Kevin G. TeBeest
- Do the following. They will be referred to in class several times.
- Do Problem 1a,b,c.
- Do Problem 2 above.
- Do 3 (a,b,d)
- Do 4 (a) – Notes:
- B2 means BB,
- B3 means B2B, etc.
- AAT means A times AT.
- In problem 4, also determine ATA.
Does AAT = ATA?
- Given matrices:
and
A = 8 6 4 9 Determine the products AB and BA. Are the two results equal?
B = 4 –19 –7 33
- What is a matrix with only one column called?
- What is a matrix with only one row called?
- If A is non-square, does A2 exist?
- What is (AT)T?
- Suppose A is 100 x 77.
- What is the size of ATA?
- What is the size of AAT?