HOMEWORK 7 (COMMENTS AND COMMON MISTAKES)

<< Problem 2>>

o The grading was rather harsh ... thus, the low scores.

<< Problem 3 >>

o Giving an example is not a proof.

<< Problems 4 >>

o No comments.

<< Problems 5 >>

o Most solutions were incomplete.
o Complete solutions gave long, involved explanations when there was
  a simpler explanation

<< Problems 6 >>

o No comments.