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Memo2007Ultra
Discover, Collect, Modify, Create, Share, Inspire,
through Art, Games, and Learning
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STATUS REPOwORT - 20260323 - 20260329
Arts2009 > Music2016 KeybOwOard2D : https://memo2007ultra.wixsite.com/m27u-m2016/keybowoard-2d rewritten manual, smoother to read and understand Game2010 > Spark2011 > Electronic2017 Relativity Express : https://memo2007ultra.wixsite.com/m27u-v2021/dimension-structure All Lore animations done added new animation : LABS - LaserDemo KrysY0 added mechanism to increase difficulty Fixed Potential Bug ? will see Learn2016 > Academic2017 > Science2017 > ComputerScience2023 KOwO.web
Enigma Machine
Intro The Enigma Machine is originally invented by a German Engineer : Arthur Scherbius. The Enigma Machine was originally meant for Banks for encrypting and decrypting secret messages or notes. During WW2, the Nazis saw the Enigma Machine and decided to use the machine, but they also decided to add more parts to make it more complex and secure. What are the different Parts ? A military grade Enigma Machine is made from : a Keyboard a Lampboard a Plugboard (added by the Nazis
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Math 2023
E to the I PI plus one is zero.
3 types of Animation in Unity (and other Game Engines)
Animations in Game Engines are not only just dope sheets, there are more ways to animate things
XR_XharpRazor
Mar 253 min read
Tower of Hanoi Alt version
If you come from the YouTube Video, thanks for watching that episode OwO/ That is actually a remake of an older video we have back in 2023. Compared to the older version, the structure of the video actually stays the same, what is different is the layout of the screen and the participants (my friends trying out Tower of Hanoi). In the video, we did mentioned the Alternative version of Tower of Hanoi, where rings are only allowed to move between adjacent rods, and we "challeng
XR_XharpRazor
Feb 61 min read
Volume of 3D Shapes
Intro during Primary school or Highschool, we were taught the volumes of a cone, a pyramid, an a sphere. But where do they come from ? In the textbooks that I used, they proof this volume by using water. Which I am not satisfied. In this post we will be using Integral to proof the volume of these shapes. Basic Concept assume that we have a function r(x), which can be interpreted as "give me an x-position, and I can give you the radius at that position". The result is the 3D s
XR_XharpRazor
Feb 23 min read
M2023 - Fourier Series : 3 - arith. freq + geo. amp =? circle
using fourier series to draw an unexpected circle
XR_XharpRazor
Oct 27, 20252 min read
M2023 - Fourier Series : 2 - a series of vectors
this post is meant for the tool : https://memo2007ultra.wixsite.com/m27u-l2016/foworier-sewies but before diving into the complexity of fourier series, we need to take a look at the simplest building block : a spinning unit vector, or a unit vector pointing at a certain angle in the complex plane : this is one of the famous fomular : Euler's formula, there are many proofs available online, either tearing e into it's taylor series and then clump it into 2 taylor series which a
XR_XharpRazor
Oct 27, 20252 min read
16EDO
What it is ? take an octave and cut it into 16 notes, this is 16EDO or 16TET Shasavic Music Theory - by LampLight In Shasavic Theory by LampLight, the desired target octave clamped factors are as follows : 3f -> 3/2 = 1.5 5f -> 5/4 = 1.25 7f -> 7/4 = 1.75 11f -> 11/8 = 1.375 here is a video from LampLight explaining Shasavic Music if you are completely new to this : How "good" it is here : https://memo2007ultra.wixsite.com/m2007u-ideasportal/post/microtonal-tunning-comparison
XR_XharpRazor
Oct 17, 20252 min read
M2023 - Fourier Series : 1 - World Space & Local Space
Abstract A few weeks ago, I created a tool to demonstrate the beauty of Fourier Series. This is a combination of Math and Art 🔗 https://memo2007ultra.wixsite.com/m27u-l2016/foworier-sewies fOwOrier Sewies : one of the presets "spike flower", with a modification of "f0 = 22.5" instead of "f0 = 30" Core here is a small "problem" <! WARNING !> frequencies given in the harmonic configuration should be in LOCAL SPACE This means every time you see a preset on YouTube Shorts or Tik
XR_XharpRazor
Sep 13, 20253 min read
Math is not useless, it is just you don't know how to use it
One day, my father just wanted to make sure that I know my financial formulas and calculations, so he proposed a scenario : "assume that...
XR_XharpRazor
Jun 9, 20253 min read
m^2 + 7m + 49 = 0 , m^3 = ?
for starters, we can have the following quick and clean way m^2 + 7m + 49 = 0 m^3 + 7m^2 + 49m = 0 and since m^2 + 7m + 49 = 0 m^2 = -7m - 49 then we can have m^3 + 7m^2 + 49m = 0 m^3 + 7(-7m - 49) + 49m = 0 m^3 - 49m - 343 + 49m = 0 m^3 = 343 at this point we can naively just say m = 7 since 7^3 = 343 but what will happen if we do so ? m^2 + 7m + 49 = (7)^2 + 7(7) + 49 = 49 + 49 + 49 =/= 0 what is going on ?!?! QAQ let's allow ourselves to dive into the complex plane, here w
XR_XharpRazor
Mar 14, 20252 min read
Twitter MAFS 20240523
The original puzzle : https://twitter.com/sudokill9/status/1793167695720177779?t=yr1-03_hu90J5QORaZy6kA&s=19 But first, let's name some...
XR_XharpRazor
May 23, 20241 min read
Geometry Proofs
Since we are upgrading our website, we have decided to compress all the Geometry proofs into one single post. Below are the contents of this post : Angles: The sum of the angles of any triangle is 180 ° The sum of the inner angles of any polygon Lines, Length & Distance: Pythagoras Theorem Sine, Cosine, Tangent specific value with specific angles Areas: Area of an obtuse triangle Area of a trapezoid The sum of the angles of any triangle is 180° ∵AB//CD ∴∠CAB + ∠ACD = 180° ∴∠C
XR_XharpRazor
Jun 15, 20234 min read
Dividing by 0 : Chapter 2
Inventing a system where we are allowed to divide by 0
XR_XharpRazor
May 6, 20233 min read
FB MAFS 20221015 - GaoYuTian Guessing your Age | 高雨田 大魔王 ：荧幕前你的年龄，我已经算出来了
<EN> If you are here directly, here is the link with the context: https://www.facebook.com/reel/375727531350653/ since the video is in...
XR_XharpRazor
Oct 16, 20226 min read
Largest Rectangle inside a Circle part 2
If you are here from Facebook, hi, if you are here directly, here is the link to the original video : https://www.facebook.com/watch/?ref=saved&v=986837095369965 如果你是从面子书来的，嗨， 如果你是在这里看到这个帖子的， 原视频在这里： https://www.facebook.com/watch/?ref=saved&v=986837095369965 如果你是從面子書來的，嗨， 如果你是在這裡看到這個帖子的， 原視頻在這裡： https://www.facebook.com/watch/?ref=saved&v=986837095369965 here is the original problem: 以下为原题： 以下為原題： If we have a rope of 56cm, what is the biggest rectangle it can make ?...
XR_XharpRazor
Aug 27, 20226 min read
Diving by 0, Chapter 1
We know that it is impossible to divide a number by zero. And in the past, it is impossible to square root a negative number, but...
XR_XharpRazor
Jun 6, 20223 min read
Tower of Hanoi : Part 3 of 3
I tried to played with a modified version of Tower of Hanoi : instead of just having 3 Rods, what will happen when we have 4 rods instead ? my naive first move (Caution : it is wrong) If I know how to solve a n-disk puzzle, then I can solve a (n+1)-disk puzzle, move n-1 disks to a temporary rod, move the largest disk, then move the n-1 disks again so T{n} = 2T{n-1} + 1 as well the least number of disk to use all 4 rods to solve the puzzle should be 3-disks, we will need state
XR_XharpRazor
Feb 18, 20223 min read
Tower of Hanoi : Part 2 of 3
The proof of the formula for the Tower of Hanoi WITHOUT USING INDUCTION
XR_XharpRazor
Feb 18, 20222 min read
Tower of Hanoi : Part 1 of 3
Understanding the Tower of Hanoi
XR_XharpRazor
Feb 18, 20222 min read
FB MAFS 20211215 - the Rotating Method | 柳老師教你用旋轉法秒解狀元題
If you haven't watched the video yet, here is the link : https://www.facebook.com/watch/?v=373411481208054 if you don't speak Chinese,...
XR_XharpRazor
Dec 27, 20212 min read
Primary school Math Problems that made students went BONKERS, Question 01|小学数学题“逼哭”考生, 第1题
[English version] According to SinChew Daily and Goxuan, some students cried on the spot, vomitted, table flipped, or asked the teacher...
XR_XharpRazor
Nov 24, 20215 min read
Divisible by 7
Chapter 1 when you are trying to simplify fractions, chances are you are having a hard time, you don't know what to factorize. Here are some of the techniques to know if a number is divisible by a simple factor, say from 2 to 9. Note that we are going to deal only with base-10. These tests can be divided into 3 types : Dividing Carries, Digit Sums & Complex Equations Type 1: Dividing Carries the main idea is that some factors can divide some power of ten perfectly, so we don'
XR_XharpRazor
Oct 19, 20216 min read
I can walk 5 seconds in a second
One day I assigned a question to my students : If Aaron can walk 1.2 meters for each second, how long will it take for him to walk 25000cm. And the next lesson we discussed the question, and I asked them "how long the distance Aaron can walk within a second ?". I was expecting them to say "1.2 meters" since it is so easy and it is stated directly in the question, but instead, one of them said 250seconds". Of course, I have to correct them, but after the lesson, I think to mys
XR_XharpRazor
Sep 29, 20213 min read
Lightning Triangle
Simple question.... how many triangles can you find here?
XR_XharpRazor
Aug 25, 20217 min read
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