NOTICE: Some links may not work!

July 1, 2018
The fonts in the pages were changed!
And I am thinking of changing the layout of this site. I wonder when that will happen...

A website for SNU Calculus 2 exams has been created.

April 26, 2018
A new problem 2018-04: Differentiable Decimal has been added.

A website for SNU Calculus 1 exams has been created.

March 30, 2018
I have finally added some of the Lecture Notes I had, that weren't scanned.

• Korean High School Math
• Basic Topics of KMO
• Calculus Revisited: Elementary Complex Variables
• Linear Algebra
• Mathematics for Computer Science
• Introduction to Computer Science and Programming
• Introduction to Algorithms

It really took a lot of effor to scan these, I really wish I had a good scanner I could use.
You can check out my notes here: Lecture Notes

March 6, 2018
Check out the new feature on this website! You can plot functions here!
Note that you can only plot functions of $$x$$.
You can also drag on the plot screen to move around, scroll to zoom in or out.

Interactive Function Plotter

March 1, 2018
I have been studying C++ and Java, so I was a bit behind on working on this website.
Additionally, during the last 2 weeks of February, I've been studying about Ubuntu and hosting web servers with Apache.

1) Finally, this website has its own link, http://www.zxcvber.com:8081.
Unfortunately, I have currently living in the school dormitory, and they blocked port 80, 443, 8080, so I cannot use them.
So every time I want to visit my website, I have to put an additional ":8081" to access my website.
How Convenient!

2) I considered that all the news just got very old, so I moved everything to Older News tab. You won't really have anything to check out there.

3) I am also planning to design a new layout for the whole site and page, but 2018 Spring semester starts tomorrow, so I have no idea when I will be finished with it.
Although I don't have any classes tomorrow, I won't be working on this anyway.

4) A new problem 2018-03: Cauchy-Schwarz ? has been added. I personally encountered this problem like 10 days ago, it was just a problem on a Grade 10 math textbook. But I had no ideas on how to solve the problem at a "Grade 10 level", while I had many more ideas on how to solve the problem if I ignored the constraint that I had to solve it with only the knowledge of 10th-graders.
Well, it actually turned out to be very easy, so I would really like to post it up here, and leave it for future reference.

5) I might be changing the name of this site. But I just might be to lazy to do such things. It will probably be applied with the new website layout I will be creating in the (long) future. I have no idea when it will be done. Also, I am terrible at naming things, especially variables. (...) Rather declaring a war might be easier for me...

6) For those of you who actually clicked on the link in 1), you might have noticed the rainbow colors flashing on "zxcvber". I just added them for fun. Now I think you might have just clicked on that link out of curiosity. Hmm...

7) Added a page view counter on the sidebar, only for the main page.

January 2, 2018
A new problem 2018-01: Irrational Sum was added for 2018!

+) I have found a problem posted on Aug 22, 2017. I have also added that problem.
2017-02: Tangent of Sum of Arctangents

January 23, 2018
I was sick for about a week, and everything got a little behind.
Now that I have fully(?) recovered, I added a new problem!
I personally came across this problem 2 years ago, and I have really thought a lot about this one!
2018-02: Periodic Function with Integral

January 9, 2018
The Math Talks section has been added! Finally!
For Math Talks section only, I will try to use as much Korean as possible.

When you get bored while stu(dying) math, take a look at some posted I have uploaded.
I don't want people to think that math is a boring subject, I really wish people knew about its significance. (Maybe I'm asking for too much)

Some news have been moved to Older News.
I am also currently thinking about problem 2018-02.
+) A page icon, also known as favicon has been added!!

January 3, 2018
The Data Section for the page has been added!
I have added my lecture notes and problem sets. The section teaching materials will be added soon.

These were originally posted on my Google Site, now I am moving them here.
+) I also modified my profile, added some brief information about me.

+) While I was editing my pages, I got to look at my files again, which were created when I was in high school. Then the memories of me studying math in high school just came to my mind.
I remember studying math in high school as an amazing time because I could train my skills for further studies. It was really fun, and if I really have some time, I would really like to take a step back from what I'm currently doing and take a look at the things I have done in high school.

January 1, 2018
Hi! Welcome to 2018!
Happy New Year!
The post created last year seems to be a bit old, since an year has passed, but it didn't really seem old to me, so I left it as it is. It is not the case that I am lazy to move the older posts to "Older News".