8.3. Matrices to Represent Data http://www.ck12.org
- Write out the 2×3 matrix whose entries areai j=i−j.
Morgan worked for three weeks during the summer earning money on Mondays, Tuesdays, Wednesdays, Thursdays,
and Fridays. The following matrix represents his earnings.
24 22 32
25 28 30
30 28 32
10 15 19
35 32 30
- What do the rows and columns represent?
- How much money did Morgan make in the first week?
- How much money did Morgan make on Tuesdays?
- What day of the week was most profitable?
- What day of the week was least profitable?
- Is the following a matrix? Explain.
dogs 0
cats 3
shee p 0
ducks 4