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How To: Represent complex numbers with the Argand Diagram

Need a little help with your math homework? No problem, the Math Centre offers students video tutorials that will provide as a reference guide for self-study. Students get self-study resources targeted to the needs of individual courses, and teachers gain generic mathematics support and study materials for use with students.

How To: Explore Density, Viscosity & Miscibility with a Colorful Layered Liquid Science Experiment

Ever wonder why Jupiter has those colored bands across its surface? Jupiter's enormous mass is made from an array of different liquids, and those fluids do not play well together because of their different makeup. All of the hydrogen- and helium-based fluids are thought not to be miscible, which means that they aren't homogeneous in nature, resulting in strikingly beautiful bands across the planet's surface. But what about viscosity and how that correlates to the development of planets? What ...

How To: Convert temperature using y = mx + b

In this video the instructor shows how to do temperature conversions using y = m*x + b. Now if Celsius is represented by the variable C and Fahrenheit is represented by the symbol F, you can replace then in the previous equation in place of the variables x and y giving you the equation C = m*F + b. Now to solve for the values of the constants m and b you need to have values of two sample temperatures in both Celsius and Fahrenheit. Take the first sample and substitute in the above equation gi...

How To: Format dates & calculations in Excel

This is an Excel magic trick video in which the instructor shows how is time represented in Excel and how it is formatted before displaying it to us. He talks about the decimal representation of the time. He says that if O hour is mapped to the number zero and 24th hour of a day is mapped to number one then we can represent any time of the day in the format of a decimal number between zero and one. He shows the type of formatting that excel uses to convert the decimal number into a human read...

How To: Use and find x & y-intercepts in algebra

A straight line can be represented in the form of a liner equation containing two variables x and y. When the equation is graphed on a pair of coordinate axes, the line passes cut through the axes in two points. The point where the line cuts the x-axes is called as its x coordinate and the point where the line cuts the y-axes is called as its y coordinate. In this way a line has x-intercept and y-intercept. The x-intercept of a line lies on x axes and is in the form (a,0). Similarly the y-int...

How To: Tie the Celtic tree of life decorative knot

TyingItAllTogether presents this interesting video that shows you how to tie the Celtic tree of life decorative knot. To do this, you make a series of intertwining loops, until they form a circle. This wordless video is very easy to follow along. Watch, and master the art of knot-making with this great video. For more great videos on decorative knot-making, search on WonderHowTo.

How To: Convert decimals to fractions

Fractions, decimals, percentages... They are all similar in concept, just represented differently. In this video courtesy of Math Problem Generator, learn how to convert your deicmals to fractions. Make math a little easier on you with a little practice and the important information this math video holds.

How To: Master the four tones when pronouncing words in Mandarin Chinese

Simply learning words in Mandarin Chinese is not enough for being able to speak the language fluently. The Mandarin Chinese language, like many Asian languages, is tonal. This means that a word can have various meanings depending on the tone used to pronounce it. There are four tones in Mandarin Chinese which are represented by the four tone marks over the vowels in pinyin. This video covers these tones and will hopefully help you better understand their uses.

How To: Simplify rational expressions

When you need to compute the square root of a number you can do it by breaking it into perfect squares. When you can split the given number into small perfect squares you can cancel out the square root of the expression to the square of the perfect squares. You cannot always write the number inside the square root as a perfect square, but try to write this number as a product of a perfect square and another number. Now you can pull out the perfect square out of the radical and leave the remai...

How To: Shift a graph

This video will demonstrate exactly how to shift a graph on a x,y axis. When shifting a graph on the x axis you will need to replace x with x-h; where h is the variable to shift the graph. No matter how far you need to shift a graph, h is always the number of units you are shifting; shifting up or right is represented as a positive and down or left is negative. Just plug in your units into your equation and you will have your shifted graph.

How To: Change your Windows virtual memory settings

Follow this video to help you change the settings of your virtual memory on your computer. Click Start and then right click on My Computer and select Properties. A window will come up. Click on the Advanced tab,. In the first section there is a part named Performance. Click on the Settings button of this section. Another window named Performance Options will open. Click on the Advanced tab of this window. In the bottom part of this window there is a section titled Virtual memory. Click on the...

How To: Oil paint metal objects with Hall Groat

In this Painting Metallic Surfaces Hall video tutorial, learn how to paint metal objects with oil paint. This is a good tutorial to learn how to paint metal surfaces so that it looks like real metal. The examples used in this video is the painting of a pocket watch, ornament, teapot, martini glass, and more. To begin, evaluate the colors of the metal object you are painting. Make sure to pick up colors that are reflected and also make sure to pick up images that appear in the reflection of an...

Hack Like a Pro: The Basics of the Hexadecimal System

Welcome back, my novice hackers! It has become clear from some of your questions that quite a few of you are unfamiliar with the hexadecimal system, or simply, hex. The hexadecimal system is used throughout computing and if you have never studied this Base16 numering system, it may appear relatively opaque.

How To: The Hardware Hacker's Introduction to Microcontrollers, Part One: Anatomy of an Arduino

In this article, I'll be explaining the basics of how microcontrollers work, physically and virtually. First off, microcontrollers are no simple thing, so don't be discouraged if you find it mind-boggling! The world of microcontrollers is fascinating, engaging, and an awesome hobby; it never gets boring. I'll be focusing more on I/O and analog based microcontrollers, such as those running Arduino, and using Atmel chips as examples (these are most commonly available, and easy to program).

News: Apple Just Released iOS 12.3 Public Beta 2 for iPhone, Features Small Updates to Wallet & Date/Time

Apple just released the second public beta for iOS 12.3 today, Tuesday, April 9, one day after the release of the iOS 12.3 developer beta 2. This update introduces new Japanese "Date & Time" updates as well as changes to Wallet transactions. Overall, iOS 12.3 includes Apple TV Channels, premium monthly subscriptions with content available directly in the TV app across the Apple ecosystem.

News: Apple Just Released iOS 12.3 Developer Beta 2 Today, Includes Date & Time Features & Updates to Wallet Transactions

Apple just released iOS 12.3 dev beta 2 today, Monday, April 8, which follows the first iOS 12.3 beta by twelve days. This update introduces new Japanese Date & Time features as well as updates to Wallet transactions. As a whole, iOS 12.3 introduces Apple's previously announced Apple TV Channels, premium monthly subscriptions with content you can watch right in the TV app across Apple products.

How To: Web Development 03 - Styling Pt 1

Welcome fellow Null-Byters! I would suggest you watch reading my last tutorial before we begin. In our last adventure, we began making a simple, ugly website. If we want it to make it look good, we should add some styling. But first, we need to understand the basics.

How To: Calculate azimuth in trigonometry

Azimuth is simply the angle of an object in the sky along the horizon. Yes, it's spherical trigonometry but it's not difficult! Check out this video and in just a few minutes you will be able to solve azimuth problems on your own.

How To: Graph the slope of a line through two points

If you want to learn how to get and graph the slope of a line using two points, you should watch this. 1. Let your two points be (x1 , y1) and (x2 , y2). Draw a straight line that connects the two points. 2. Use the formula, m = change in y over change in x , for finding the slope which is represented by the variable m. 3. The simpler form of the formula would be m = (y1 - y2) / (x1 - x2). 4. If you were given two points, just substitute the values in the given formula. 5. For example, the tw...

How To: Find the area of a parallelogram using geometry

The video shows us how to find the area of parallelogram using geometry. Here in this video it is done by using an example where the parallelogram is given ABCD. The area of the parallelogram is base times height (bh). Here the base is given as 15 but the height is not known but it is represented by the segment BD. To find the value of h, let’s use right triangle BDC on the right side of the figure. Since base is 15 and the opposite side of the parallelogram is congruent, the hypotenuse of th...

How To: Use repeat (REPT) function in Excel

There are many functions in Microsoft Excel. One function that people rarely use is the Repeat function or REPT. In this video, an example used is a chart of people and their sales of a certain item. Just looking at the numbers, it is hard to compare the different sales easily, but a more visual approach may work better. Next to one of the cells, type in "=REPT(" which is the repeat function. A popup should say "=REPT(text, numbertimes)". For "text", type in *** or anything, really. For "numb...

How To: Web Development for Hackers 1.1: HTML,CSS,JS

hello hackers,newbies and followers of this great community, after some research here in our community, I noticed that there is not even one tutorial that teach Web Development. We have a lot of tutorials on how to hack web site but many do not know exactly how a web site is composed, then I decided, meeting the community's needs, begin to teach people how to develop web sites.

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