Solutions to Homework 9 has been posted on theAssignments page.
Homework 10 has been posted on the Assignments page. It will be due in class on Friday, November 20 but accepted without penalty until Monday, November 30.
Solutions to Sample Exam 2 has been posted on the Exams page.
Solutions to Homework 8 has been posted on theAssignments page. Grades are available on webct.
Sample Exam 2 has been posted on the Exams page.
Homework 9 has been posted on the Assignments page. It will be due in class on Friday, November 6 but accepted until Monday, November 9.
Grades of Homework7 is available on webct.
Solutions to Homework 7 has been posted on theAssignments page.
Solutions to Homework 6 has been posted on theAssignments page. And grades for homework 6 are also available on webct. Besides, if you see the notation "N.C." in your paper, it stands for "Not Clear", which means you may have points deducted for giving a not very clear proof.
Homework 8 has been posted on the Assignments page. It will be due in class on Friday, October 30 but accepted until Monday, November 2.
Homework 7, which is due on October 23, will also be accepted without penalty if you turn it in on Monday, October 26. Starting with this homework, all homework will be due on Friday, but will be accepted without penalty the following Monday, to give you more flexibility in scheduling your work. Homework will not be accepted any later. I am hoping that this will mean that you will take more time to do your assignments, and I will see more complete solutions!
Homework 7 has been posted on the Assignments page. It will be due in class on Friday, October 23. Remember to always give justification or proof to support your answer!
IMPORTANT!
Professor Chaudhuri asked for a proof in every problem of homework6. But only some of you did so. In order to fix that, please turn in your proof for any problems that you didn't prove at the beginning of class on Monday. The proof can be short, but there must be one for each single problem. Failure to do this will lead to serious point deduction.
Solutions to Exam 1 has been posted on the Exam page.
There was an error in Probelm 10 of Homework 6. I have corrected it now; please download the correct version.
Homework 6 has been posted on the Assignments page. It will be due in class on Friday, October 16.
I noticed that on someone's textbook, there is a typo on Sec2.2, Ex 30c. A \union B= B \union C should be A \union C= B \union C. If there is anyone who got points deducted for this reason, please email me telling me how many points were deducted on this problem, I will add your points back! The deadline of this is next Friday, say, Oct. 16.
Solutions to Sample Exam 1 has been posted on the Exams page.
Solutions to Homework 5 has been posted on theAssignments page. And grades for homework 5 are also available on webct.
Some changes are made again on solutions of Sec 2.1 Ex 30. Please pay attention to it. Sorry for the inconvenience.
Some changes are made on solutions of Sec 2.1 Ex 30 and Sec 2.1 Ex 32. Please pay attention to it. Sorry for the inconvenience.
Exam 1 will be held in class on Friday, Oct 9. On the Exams page, you will find the exam syllabus, a sample exam and a reference sheet that will be handed out with Exam 1.
Solutions to Homework 4 has been posted on theAssignments page. And grades for homework 4 are also available on webct.
Homework 5 has been posted on the Assignments page. It will be due in class on Friday, October 2.
For Homework 4, Sec 2.1, Ex 30, I would like to see a well-written logical proof. Note that it would be easier to do an indirect proof; assume that A and B are non-empty and A x B = B x A, and prove that A = B, a contradiction. Remember, A = B means that x is in A if and only if x is in B, so that is what you would need to prove.
Solutions to Homework 3 has been posted on the Assignments page.
Homework 4 has been posted on the Assignments page. It will be due in class on Friday, September 25.
The solutions to Homework 2 have been posted on the Assignments page.
Homework 3 has been posted on the Assignments page. It will be due in class on Friday, September 18.
The solutions to Homework 1 have been posted on the Assignments page.
Homework 2 has been posted on the Assignments page. It will be due in class on Friday, September 11.
Homework 1 has been posted on the Assignments page. It will be due in class on Friday, September 4.
Welcome to Com S 330! There will be no recitations this week. They will start next week at 9 am and 10 am on Wednesday, September 2. The first homework will be due on Friday, September 4.