Groups

Math 55, Summer 2012

1–30 of 47

This is the google group for Math 55 in Summer 2012 with instructor Kevin Lin.

I will be using this forum to make course announcements; you may also use this forum to discuss course material and to form study groups. When posting here, please use your full real name. I'll also be happy to answer course related material here.

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8/19/12

Course grades should be up soon...

Hi all, I think that all of your grades should now be available on bearfacts. Let me know if you have

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Course grades should be up soon...

Hi all, I think that all of your grades should now be available on bearfacts. Let me know if you have

8/19/12

8/8/12

Chapter 11 of Rosen

Section 11.1: http://math.berkeley.edu/~kevin/math55/sec11-1.pdf Section 11.5: http://math.berkeley.

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Chapter 11 of Rosen

Section 11.1: http://math.berkeley.edu/~kevin/math55/sec11-1.pdf Section 11.5: http://math.berkeley.

8/8/12

8/8/12

Wrapping things up

I just posted the last homework assignment. The last homework set is due on the day of the final,

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Wrapping things up

I just posted the last homework assignment. The last homework set is due on the day of the final,

8/8/12

8/8/12

Quiz 9 solution is up

Here: http://math.berkeley.edu/~kevin/math55/quiz9solution.pdf Woohoo! Done with quizzes. At least

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Quiz 9 solution is up

Here: http://math.berkeley.edu/~kevin/math55/quiz9solution.pdf Woohoo! Done with quizzes. At least

8/8/12

8/7/12

Formulas for tomorrow's quiz

Example 18 on page 490 is good to know, too.

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Formulas for tomorrow's quiz

Example 18 on page 490 is good to know, too.

8/7/12

8/4/12

Quiz 8 solution

Just posted quiz 8 solution: http://math.berkeley.edu/~kevin/math55/quiz8solution.pdf Also I will

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Quiz 8 solution

Just posted quiz 8 solution: http://math.berkeley.edu/~kevin/math55/quiz8solution.pdf Also I will

8/4/12

8/3/12

Clarification of a point from discussion today

Today in class there was some confusion about the following problem: Suppose we have a set of k^2

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Clarification of a point from discussion today

Today in class there was some confusion about the following problem: Suppose we have a set of k^2

8/3/12

Stan Tsai, … Kevin Lin8

8/2/12

Thanks, guys, for posting these. It looks like the website is still down. Because of these technical

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Thanks, guys, for posting these. It looks like the website is still down. Because of these technical

8/2/12

8/1/12

Visualizing Bayes's theorem and visualizing conditional probability

Hi guys, If you find yourselves having trouble understanding Bayes's theorem or more generally

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Visualizing Bayes's theorem and visualizing conditional probability

Hi guys, If you find yourselves having trouble understanding Bayes's theorem or more generally

8/1/12

8/1/12

Homework for 8/1

I forgot to post the homework until right now. Today's homework is §7.3: 5, 6, 10, 15.

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Homework for 8/1

I forgot to post the homework until right now. Today's homework is §7.3: 5, 6, 10, 15.

8/1/12

7/31/12

Clarification of a point from lecture today (distinguishable dice vs. indistinguishable dice)

There was a point of confusion today in class, regarding whether we should consider dice to be

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Clarification of a point from lecture today (distinguishable dice vs. indistinguishable dice)

There was a point of confusion today in class, regarding whether we should consider dice to be

7/31/12

7/31/12

Cool Radiolab episode on probability!

Hi guys, Check out this cool radiolab episode that I mentioned in class today: http://www.radiolab.

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Cool Radiolab episode on probability!

Hi guys, Check out this cool radiolab episode that I mentioned in class today: http://www.radiolab.

7/31/12

7/30/12

Office hours today CANCELLED

Sorry, but I am canceling my office hours today. Kevin

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Office hours today CANCELLED

Sorry, but I am canceling my office hours today. Kevin

7/30/12

7/30/12

Tomorrow's guest lecture

Thanks to those who attended. I hope you guys enjoyed it. Here's Patch's website: http://www.

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Tomorrow's guest lecture

Thanks to those who attended. I hope you guys enjoyed it. Here's Patch's website: http://www.

7/30/12

Kevin Lin, Cristian De Leon2

7/26/12

Quiz 7 solutions and Midterm 2 review questions

Hey kevin will you post solutions/hints to the midterm review questions? -cris d.

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Quiz 7 solutions and Midterm 2 review questions

Hey kevin will you post solutions/hints to the midterm review questions? -cris d.

7/26/12

7/26/12

Due date for homework assigned on 7/24

I've changed the due date for the hw assigned on 7/24. It is now due 8/2. (However the material

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Due date for homework assigned on 7/24

I've changed the due date for the hw assigned on 7/24. It is now due 8/2. (However the material

7/26/12

7/26/12

Solutions for hw7

The grader just made a few corrections for my solutions. Please check the updated solutions: http://

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Solutions for hw7

The grader just made a few corrections for my solutions. Please check the updated solutions: http://

7/26/12

Jihui Jin, Kevin Lin2

7/24/12

Combinatorial Proofs

Here is a hint: Think about the ways of choosing two distinct subsets of {1,2,...,n}.

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Combinatorial Proofs

Here is a hint: Think about the ways of choosing two distinct subsets of {1,2,...,n}.

7/24/12

7/18/12

Solutions for today's discussion worksheet

By popular request, I've just written up some solutions for some of the problems for today's

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Solutions for today's discussion worksheet

By popular request, I've just written up some solutions for some of the problems for today's

7/18/12

7/18/12

Homework for today

Since I forgot my notebook at home today, I wasn't able to tell you the homework assignment for

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Homework for today

Since I forgot my notebook at home today, I wasn't able to tell you the homework assignment for

7/18/12

7/17/12

Quiz 5 solution

I have just posted the solution for quiz5: http://math.berkeley.edu/~kevin/math55/quiz5solution.pdf

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Quiz 5 solution

I have just posted the solution for quiz5: http://math.berkeley.edu/~kevin/math55/quiz5solution.pdf

7/17/12

7/17/12

Number of surjective functions

Please note: The formula I gave in class for the number of surjective functions from a set X to a set

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Number of surjective functions

Please note: The formula I gave in class for the number of surjective functions from a set X to a set

7/17/12

7/16/12

Finding inverses mod n

Hi all, Today a few people have asked me the question: What if, when computing the inverse of a

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Finding inverses mod n

Hi all, Today a few people have asked me the question: What if, when computing the inverse of a

7/16/12

7/6/12

Homework grades

FYI: hw1, hw2, and hw3 have each been worth 14 points. Here are the problems that were graded for hw1

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Homework grades

FYI: hw1, hw2, and hw3 have each been worth 14 points. Here are the problems that were graded for hw1

7/6/12

Cristian De Leon, Kevin Lin2

7/6/12

Question #11...

Theorem 3 on page 241 shows that the two different definitions/notations are actually equivalent.

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Question #11...

Theorem 3 on page 241 shows that the two different definitions/notations are actually equivalent.

7/6/12

7/5/12

Midterm 1 review questions

Updated the questions: http://math.berkeley.edu/~kevin/math55/midterm1reviewquestions.pdf (fixed #1,

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Midterm 1 review questions

Updated the questions: http://math.berkeley.edu/~kevin/math55/midterm1reviewquestions.pdf (fixed #1,

7/5/12

Cristian De Leon, Kevin Lin2

7/4/12

I mean: run selection sort on the sequence (a_1,a_2,a_3,a_4,a_5)=(1,2,3,4,5), and on the sequence (

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I mean: run selection sort on the sequence (a_1,a_2,a_3,a_4,a_5)=(1,2,3,4,5), and on the sequence (

7/4/12

Cristian De Leon, Kevin Lin2

7/4/12

Everything from lecture, discussion, homework, and quizzes is fair game for the midterm. And yes,

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Everything from lecture, discussion, homework, and quizzes is fair game for the midterm. And yes,

7/4/12

7/3/12

CORRECTION: Homework problems for today from section 4.1!!, not section 4.2!!

Hi guys, Today's homework is section 4.1: 15, 16, 26, 27, 28, 38. I think I accidentally wrote

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CORRECTION: Homework problems for today from section 4.1!!, not section 4.2!!

Hi guys, Today's homework is section 4.1: 15, 16, 26, 27, 28, 38. I think I accidentally wrote

7/3/12

7/1/12

Just a reminder that the 3rd homework set is due tomorrow at the beginning of class. Also, we are

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Just a reminder that the 3rd homework set is due tomorrow at the beginning of class. Also, we are

7/1/12

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