Download Homework 2 questions and answers to odd numbered questions.

A lab consultant who can help with C251 questions is in LF105 or LF111.

See: www.ius.edu/rwisman/lab for current schedule.

Contact me by email with any questions. I can also usually arrange to meet on campus.

Options:

1. Bring a handwritten homework to class on due date.
    
2. Email Word document HW2.doc to instructor by 13:00 on due date.

The special symbols can be copied from the notes and pasted into Word. Here are some:

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• Section 1.5
  • 4, 6, 14 a, 24

  Hints:

  • Question #6
    • suggested propositions:
      • r - "it rains"
      • f - "it is foggy"
      • s - "the sailing race will be held"
      • l - "the life saving demonstration will go on"
      • t - "the trophy will be awarded"
    • Set up two a two column proof similar to Example 6
    • First determine the hypotheses given from the text of the question
  • Question #14 a
    • suggested propositional functions:
      • c(x) - "x is in the class"
      • r(x) - "x owns a red convertible"
      • t(x) - "x has gotten a speeding ticket"
    • Set up two a two column proof similar to Example 13
    • First determine the hypotheses given from the text of the question

• Section 1.6
  • 2, 18 a, b

Hints:

• Question #18
  • mathematical definition of an odd integer: let n be the odd integer, then $k such that n = 2k + 1
  • mathematical definition of an even integer: let n be the even integer, then $k such that n = 2k

• Section 1.7
  • 2, 4

  Hints:

  • Question #2 - use an exhaustive proof; 1, 8, 27, 64, 125, 216, 343, 512, 729 are the cubes greater than 0 and less than 1000.
  • Question #4 - there are 3 cases.