Elimination in mathematics is used to find the solution set of a system of equalities. This video tutorial shows how to use elimination to find the solution set of a given equation and offers several examples to illustrate the process. Before applying this method, the equation ...more
This video teaches how to use calculus find the position, velocity and acceleration of an object. Imagine an object moving on a straight line. It's position at any time (t) is given as s(t) pronounced "s of t". It's velocity is v(t)= s'(t) which is the derivative of s(t). It's ...more
To do this, there are many ways to approach this problem. One way is to look at the change in Y over the change in X by looking at the points on the graph. Another way is to use the equation Y2-Y1 over the equation X2-X1. In other equations where you are given a graph, you may ...more
On Yay Math, Robert Ahdoot, founder of Yay Math, will show you some square root functions and some inequalities. He begins with the problem y=x². Then he makes a sketch with two intersecting lines in a t shape. The problem is illustrated by a curved U shape, the U's bottom res ...more
Parallelogram is a quadrilateral in which both pairs of the opposites are parallel. To find the area of a parallelogram first draw the diagram of a parallelogram. Parallelogram can be further divided into squares and rectangles. To calculate the area of both of these kinds of ...more
This video shows the user how to use a T189 calculator to plot linear equations. The video demonstration is done using an ‘on screen’ representation of the calculator – there are also verbal instructions. The equations are plotted on the same axis by selecting the ‘y=’ functio ...more
Calculating The Area Of A Parallelogram A parallelogram is a 4-sided shape formed by two pairs of parallel lines. Opposite sides are equal in length and opposite angles are equal in measure. To find the area of a parallelogram, multiply the base by the height. The formula is: ...more
Building a DIY Alarm System: The Concept So, you want to protect your property, or maybe a room, car, or even your backyard. The concept of an alarm system is to notify the "alarm administrator" that there is an intruder entering the previously designated boundaries. The trig ...more
In this video, we learn how to graph inequalities on a number line. Inequalities have a greater than or less than sign instead of an equal signs. Remember that these are no different than figuring out how to graph normal equations. First, you will need to remove the single num ...more
In this video, we learn how to determine if a point lies on a line in standard form. In order to do this, you will need to substitute the X and Y value with the ordered pair that is given. The X value is the first number and the Y value is the second number. Re-write your equa ...more
Solving the Inequalities using graph, first you have to take the inequality equation into equal. Then convert the equation into straight line equation i-e(y=mx+c). Giving own values for 'x' like (-1, 0, 1) we would get the value for 'y'. By plotting these points in the graph, ...more
YouTube user NotesCollegeAlgebra teaches you how to evaluate combinations of functions from graphs. You start off with a graph and some functions. (f+g)(-3), (g/f)(0) and (fg)(-6). You start looking at the graph and the first line and you get (f+g)(-3)=f(-3)+g(-3)=3+1=4. (g/f) ...more
This video explains the properties of parallel lines and transversals in geometry. The instructor, Robert Ahdoot, uses an analogy in which he compares lines and transversals to the streets of Manhattan, New York. Continuing with this comparison, he goes over corresponding angl ...more
You Tube User robichaudd teaches you how to simplify a complex fraction with 3 fractions top and bottom. Your result should be 1 fraction over 1 fraction. To do this you must find the L.C.D. at the top, which x cubed. That is the largest variable there. Thus, the L.C.D. at the ...more
This video shows us how to draw a linear equation using the slope and intercept technique. First, the narrator explains how to simplify the equation in order to get the slope and intercept out. He then shows how the coefficient of x equals the slope and the constant term tells ...more
In this tutorial, the author shows how to determine if a point lies on a given line which is in Point Slope Form. To show the method he takes a sample point order pair and an equation of a line in its point slope form. Now he substitutes the value of the x, y order pair and th ...more
In this tutorial the author shows how to derive a slope-intercept equation of a line given an X-Y table. He explains that the general form of slope intercept form which is y = m*x + b. Now he intends to find value of slope, i.e. m first. Now slope is change in y over change in ...more
Learn how to find south, your latitude, and your longitude with only a few household items and some know-how, just by watching this science video tutorial. However, if using the homemade quadrant cited, the precision of your findings will be rather low. Don't worry, you'll be ...more
Mark The Shark is educating any outdoor enthusiast as to how to use his a spinning reel when fishing. After establishing a spinning reel is what you are using, it is best to adjust the tension of the line using the drag wheel. The drag wheel is a dial that can usually be found ...more
In this video the instructor shows how to graph linear inequalities. A linear in a equation is almost similar to a linear equation except for the sign in the equation. Now treat the in equation as a linear equation and graph the line. So substitute the lesser than or greater t ...more
In this video tutorial learn how to graph an equation using the slope and y-intercept. To show how this can be done, the equation 4X-5Y=20 is used as an example. The first step that needs to be done is to convert the equation into the y=mx+b format where m is the slope and b i ...more
The 18th puzzle is called "Synapses". See how to solve it in Assassin's Creed 2. Code wheel puzzle: Your first clue is to line up 5 with a single tree-looking symbol. The key here is the weird-looking equation on the left, which offers a hint as to the progression of the symbo ...more
You will need marking pencils or chalk, scissors, seam ripper, pins and good quality matching thread. Mark desired length on each pant leg. Option 1: Stand on pants and place a pin where fabric hits the floor. Option 2: Fold pants up to desired length & pin. Take pants off; tu ...more
Impress your friends by actually knowing what to do with those darts—other than winging them toward the wall—next time you're at a bar. You Will Need * A dart board * At least 3 darts * 2-5 players * A dart board * At least 3 darts * 2-5 players Step 1: Find a dart board Go ...more
Search "Pilates animation" on Wonderhowto for other more videos by this user. If you are looking a for a quick pilates reference, take a look at this pilates animation. This a quick & easy, clearly explained diagram of the pilates mat exercise: Classical Pilates for Beginners ...more
This is the third part of my electromagnetic pulse series (see Part One and Part Two). By now, I've covered the hardware and general concept of electromagnetic pulse generators, but how exactly do they disable electronics? How can an invisible field of energy have such a catas ...more
Curve stitching is a form of string art where smooth curves are created through the use of straight lines. It is taught in many Junior High and High School art classes. I discovered it when my math students started showing me the geometric art they had created. The process of ...more
Last week's challenge brought up a good question (thanks Lisa) regarding the functionality of the Official Scrabble Players Dictionary, 4th Edition, both online and in print form. The word TACTICAL was the answer to the first puzzle in that challenge, but when you search for t ...more
These measurments should be taken and recorded before drawing up you clothing design pattern. Wear the bra and panties you will be wearing with the final garment. Another option, especially if you are going to be selling a series of the garments, is to follow a size chart. Whi ...more
You Want White Teeth Without Expensive Over-The-Counter Products? Here's An Inexpensive, Effective Solution. Everywhere you look there are products for whitening teeth. You could spend a fortune on products you have to use everyday. This tutorial will show you a natural, inex ...more
Treasure may be buried as close as your own backyard. If you have some time to kill, try the art of treasure hunting. You’ll be sure to discover lots of interesting thing after learning how to use a metal detector to look for treasure. Think buried treasure is only for pirate ...more
As the cooler weather starts rolling in your pet will need more than just his natural coat to keep the shivers away. Take him out in style by designing a simple yet elegant tailored coat that will fit him perfectly. Here is an easy lined tailored coat with a nice thick comfort ...more
In this article, we will build a parallel password cracker using the techniques explained in the previous part. As SHA-512 is the digest function that Kali (and most modern Linux distributions) use to store our passwords, we will make a SHA-512 password cracker. I will use Ka ...more
When we are building programs that communicate over a network, how can we keep our data private? The last thing we want is some other lousy hacker sniffing our packets, so how do we stop them? The easy answer: encryption. However, this is a very wide-ranging answer. Today we'r ...more
A well designed sleeve is very important to creating a top or jacket that fits comfortably. Get your correct measurements before you begin. Please view the following step-by-step instructions and accompanying video and diagram to create the basic sleeve. Video: . Step 1: Measu ...more
NOTICE: Ciuffy will be answering questions related to my articles on my behalf as I am very busy. Hope You Have Fun !!! Hello Guys, Welcome to my tutorial and in this tutorial, We are going to talk as well as know of the possible dangers of metadata in our day to day images. ...more
A new technological movement without the technology itself is just an idea sitting and waiting. Once the technology is present in the equation, movement forward can begin. This is how many of us see the head-mounted displays (HMDs) and smartglasses that have recently entered t ...more
Contrary to popular belief, augmented reality apps have been available for a while now. I remember using the Layar app (still available for iOS and Android) to explore nearby businesses and landmarks with varying success via an early-generation Android handset. It would be ha ...more
Video: . Whether you are gardening, cooking, riding a motorcycle or just want to cover up on a bad hair day, doo rags are easy to make and fun to personalize to suit to your style. If you would rather just download the durag pattern click here. You will need: Big enough pape ...more
As we go about our daily grind, our smartphones and tablets take a silent beating. Dirt, dust, oil, and grime that our hands have picked up immediately gets transferred over to our shiny pocket-sized computers every time we check the time or look for new notifications, and ove ...more
Hi, everyone! Recently, I've been working on a pretty interesting and foolish project I had in mind, and here I'm bringing to all of you my findings. This guide's main aim is to document the process of building an Android kernel, specifically a CyanogenMod kernel and ROM, and ...more
The Shadow Brokers, a hacker group known for its dump of NSA hacking tools in 2016, has just leaked their remaining set of data which implies that the NSA compromised SWIFT, the global provider of secure financial services, to spy on banks in the Middle East. The hackers have ...more
The Oculus Rift is finally shipping to customers in more than 20 countries, and we're getting a good idea of how the device holds up from the initial reviews. You'll see some common threads throughout: along with an impressive virtual reality experience, the device is very com ...more
The Google Cast feature that serves as the primary interface for the Chromecast and comes bundled with Android TV devices like the Nexus Player is a marvel of modern technology. But as these things go, troubleshooting issues can be difficult with something so groundbreaking, e ...more
I record close-cropped videos and take macro still shots with my smartphones on a daily basis, so as you would expect, I spend a lot of time cleaning these devices. Over the course of a couple years, I've fine-tuned my cleaning regimen, and at this point, it's down to a near-s ...more
Apple finally gave the Books app for iPhone the attention it deserves, making the experience even better for reading e-books and listening to audiobooks on the go. You can even do more with Books in custom shortcuts you develop. We've had Apple's convenient book reader and bo ...more
If you're getting into automation, Bash scripting is usually the way to go. However, there are a couple of limitations, and one of them is logging into another device like a Raspberry Pi and running a script automatically. To help in those situations, we're going to automate d ...more
If we were to assign a theme for the 2019 edition of the Next Reality 30 (NR30), it might be something along the lines of, "What have you done for me lately?" Many of the top names in the industry from the 2018 edition remain the same, but their positions have shuffled. The p ...more
Results of an early-stage clinical trial of an HIV vaccine could mean a hoped-for breakthrough in the battle against AIDS. It was in 1981 that the Centers for Disease Control and Prevention (CDC) first reported on a rare lung infection in a young, healthy man who was gay. In ...more
Imagine tilting the top of your phone away from you — it becomes a bit of a trapezoid, right? The top will appear smaller since it's further away, and the bottom will appear larger since it's closer to you — in other words, the perspective is all off. The same can be said of t ...more
Even for those of us who enjoy spending time alone at home, at a certain point, it just gets boring. We all need social interaction, but with stay-at-home orders, that can be hard to come by. If you're feeling the itch to hang out with friends and have a good time, you should ...more
Primarily caused by the bacteria Borrelia burgdorferi, Lyme disease is the most common tickborne disease in the US. By all predictions, 2017 is expected to be a banner tick year in several regions. If you have children, it is important to know what to expect. Ticks can bite a ...more
There are a ton of new features in iOS 11, but some of the best ones, in my opinion, are in the Camera app. They're not huge features, but they're much appreciated to anyone who's ever taken a Live Photo or portrait, or even to those who've needed to scan a QR code quickly. W ...more
Devastating and deadly, land mines are a persistent threat in many areas of the world. Funding to clear regions of land mines has been decreasing, but new research may offer a less dangerous method of locating hidden, underground explosives by using glowing bacteria. There ar ...more
Jostled in the airport, someone is coughing in line. The air looks empty but it is loaded with microbes that make their way into your body. You get sick. You give it to your family, and that's pretty much it. But what if you were so contagious that you spread it to your entire ...more
As many of you know, processor's clock frequency improvement got stuck in about 2003, causing the origin of multicore CPU (and other technologies). In this article I'll introduce you on how to run code simultaneously in various processors (I suppose that all of you have a mult ...more
Welcome back, my aspiring hackers! In many of my earlier tutorials, I mentioned the complementary nature of hacking and forensics. Both disciplines, hacking and forensics, benefit from a knowledge of the other. In many cases, both disciplines will use the same tool. In this t ...more
My years in the restaurant business have taught me many things. Some of those things are best left unsaid and other things require a PhD in vulgarity, but the one thing I learned that I keep coming back to night after night is that you do not have to spend a lot of money to dr ...more
As sure as death and taxes, sitting at a wobbly table at one time or another is inescapable. With your weight on it, the table shifts from one end to the other, lifting one leg in the air and then the other; a parade of seesaws, especially if you have someone sitting on the ot ...more
Brand loyalty is one of the main factors behind our decision to choose a particular mobile device, but it doesn't have to be the entire equation. Educated consumers know that certain devices simply fit their budget and usage better than others, which means you can't always let ...more