Posts Tagged ‘math’
Jan 11, 2022
Math You Might Find Useful For Daily Problem Solving

Order of operations

Parenthesis, Exponents/Power, Multiplication, Division/Modulus, Addition, Subtraction

Notation example
(a2 * b) + c – d
1. a2
2. * b
3. + c
4. – d

Proportions

a / A = x / X

a b
=
A B

You’re trying to solve x. You have to cross-multiply. Be mindful of order of operations.

x * A = a * X
x = a * X / A

Because I’m so nice, I coded up a very basic proportions calculator for you. Give it a try now!
(more…)

Jul 7, 2015
Secrets of Bitcoin By Satoshi Nakamoto

By Chongchen Saelee

When I first conceived Bitcoin for my high school assignment, I had to come up with a way to simulate existing financial system or at least what I thought it was. So back in the late 1990s, people were already using credit cards (a kind of non-tangible money) but there was very little integration or user-friendly interface with the Internet. Then PayPal came along which was pretty close to “Internet money”, but was obviously just an exchange between existing currencies. (more…)

Apr 30, 2013
How to Calculate Total PayPal Payment Fee

If you’re doing monetary transactions through PayPal, you should be aware that PayPal takes a cut for their services. This is how you would calculate the actual amount to charge someone who owes you money. (more…)

Sep 11, 2012
Qt 2D Game Engine: Getting Started

Let me explain the bare minimum concepts behind getting your first 2D game engine up and running in Nokia’s Qt envirnoment. (more…)

Jul 9, 2011
Blame it on the algo-algo-algorithms: Basic Math Equations to use in 2D game development

3D game development gets into another dimension of complexity, literally. But sometimes simple is better. Let’s see some simple math equations and structures used in 2D game development. (more…)