In this video the instructor teaches about inverse functions. Normally in inverse functions problems you are given a function that has a set of points and you are asked to find the inverse of that function. So if the function has a point in the form (x, y) then the inverse function has its points in the form of (y, x). Now when you are given a function f(x) that is in the form of x and asked to find its inverse, equate the function to y. Solve the equation to get the value of variable x in th...
In this video the instructor shows how to graph a piecewise defined function. A piecewise defined function is a function that is defined in separate pieces. In these kind of functions, for different ranges of the value of x, you are given different small functions, all of which together make the whole function. This means your equation of the function is given in the form of smaller functions. Now to graph these kind of equations all you have to do is graph the individual equations in the sam...
A CNC router machine is probably the most useful tool a hobbyist can own, but the price for a CNC machine on the market is way more than the average hobbyist is willing to spend. You can build your own CNC with very basic tools, little knowledge of machinery, mechanics, or electronics, but be warned, these machines are inherently dangerous, so wear the proper protection and use common sense. At the very least, read the instructions and precautions on every tool you use.
In this clip, you'll learn how to create and call simple functions when coding in Python 3. Whether you're new to the Python Software Foundation's popular general purpose programming language or a seasoned developer looking to better acquaint yourself with the new features and functions of Python 3.0, you're sure to benefit from this free video programming lesson. For more information, including detailed, step-by-step instructions, watch this video guide.
MapForce includes a powerful visual function builder that lets you create new data processing functions in a graphical way using existing functions and libraries. Learn how to combine multiple separate functions that returns a single result with this tutorial.
At some point in Fallout: New Vegas on the Xbox 360, you'll eventually find yourself in Hidden Valley, the secret location of the Brotherhood of Steel. After exploring their bunker, you may find yourself meeting with Knight Torres, the Quartermaster for the Brotherhood of Steel. She will tell you that she is missing a Laser Pistol from her last shipment and wants you to go look for it. Well, not just any old Laser Pistol will do, apparently— she wants something very specific. In this video, y...
In Fallout: New Vegas, you will eventually end up having to check out the other factions and tribes in the game. One of them happens to be the Boomers over at Fort Nellis Air Force Base, a clan of old vault dwellers who took over the base and have been making use of their heavy artillery to keep intruders away.
In this video, we learn how to play Jazz guitar: Functioning & Static Dominant Chords. When you play an A7 going to a D chord, you are playing a functioning dominant, because a five chord always wants to go to a one chord. This is because of the tension in the five chord and how it resolves to the one chord. You will hear that the chord wants to go to a different chord, so make sure you understand this concept as you are playing. If the chord does go to the other, it's referred to as a functi...
New to Microsoft Excel? Looking for a tip? How about a tip so mind-blowingly useful as to qualify as a magic trick? You're in luck. In this MS Excel tutorial from ExcelIsFun, the 694th installment in their series of digital spreadsheet magic tricks, you'll learn how the SUMIF function (and COUNTIF, etc.) cannot accept arrays. If you need to sum by year from transactional data the SUMIF and YEAR functions cannot be used together. Instead we can use the SUMPRODUCT function.
In this Fitness video tutorial you will learn how to do a yoga handstand correctly. Bend forward and place both your hands on the ground. The fingers should be pointing forward and the palms should be flat on the ground. The shoulders should be naturally in to the body. They must not be stretched. Keep both the legs bent at the knees. Now lift one leg and practice kicking slowly with the other leg and pulling the navel in towards the spine. And eventually the full body will lift up and go bac...
Have you always dreamed about quitting your day job to pursue your true passion in writing about tips on how to bake your famous cupcake pops? Stop dreaming and start doing! Thanks to the prevalence of the internet, blog writing is more popular than ever, and successful bloggers actually make quite a hefty chunk of change doing what they love.
Think you can't do pull-ups because you're a fitness neophyte and can hardly do a single push-up or pull-up? As intimidating as pull-ups may seem (we often only see beefy chunkheads doing them in gyms), they're actually modifiable for beginners.
Elephants are among the smartest mammals in the world (falling behind only us and dolphins), so what better way to decorate your cake than by adding these symbols of longevity and intellect?
Need to know how to solve function problems in algebra? From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just finish your homework or study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to work with and solve functions.
Forget the standard one-ended candle— this two-ended spinning candle beats even the biggest candle. It's a simple trick, which needs only a couple glasses (wine glasses used here), one nail, a long taper candle, and a lighter or pack of matches.
If your yard is full of pests in the summertime that you can't get rid of, consider building a bat box. Bats are great animals - they eat any unwanted insects and only come out at night so they don't bother anyone.
This video shows you how to fix the annoying "Open Tray" error that you will occasionally get when you turn on your XBox 360 console. You turn your system on and even though the tray is shut and has a disc in it, it says you left it open. This is easily fixed though. Start by turning on your XBox 360 console, and wait for it to load. Then start to gently knock on the top of your system, if you have it laying down, and eventually it should start to load your disc. If this doesn't work, either ...
Thread banger, Kenneth King shows you how to save your good fabric scissors by using thread snips, a simple but important tool you must always have in your sewing workshop. Thread snips are small pairs of scissors that are specifically used for trimming off any excess thread in your material. Kenneth explains that using fabric scissors to trim these excess threads eventually causes them to wear dull spots. Always keep your thread snips handy and do all your thread trimming at the machine.
Before you grout a floor, take the time to be sure that you really know what you're doing. Mistakes you make now can come back to haunt you later. A lot of people try to use wall grout, for instance, which doesn't work well and eventually cracks. What you really want top use is sanded grout. In this 4-part tutorial series, Tim Carter, of Ask the Builder, demonstrates how to mix up and use sanded grout when you're putting down a tile floor.
Try out this science experiment... demonstrate pressure and volume. Watch this video tutorial to learn how to create an explosion with liquid nitrogen and a plastic bottle. See the demonstration of the exploding reaction of the pressure build up in the bottle.
Check out this puzzle video tutorial on how to solve a 4x4 Rubik's Cube by advanced edge pairing. This video goes over how to match up multiple edges at a time, allowing you to eventually become faster with practice. This will also allow you to understand the technique necessary for multiple edge pairing in bigger cubes as well, where it really becomes necessary in solving quickly.
This tutorial series shows you how to model anatomy of the human body in Maya and gives specific tips on how to eventually be able to do it from memory. Part one starts with the head, part two the torso, part 3 the legs, part four the foot, part 5 the arm, part 6 attaching the parts and part 7 modeling hands.
Check out this ukulele lesson for beginners. Learn from the Australian guy. Start by learning how to hold the instrument and eventually you'll get to playing songs like "Five foot two, eyes of blue."
Exponential functions are functions which contains terms which are integers raised to the power of variables. Note that the variables are not raised to the power of integers, but the integers are raised to the power of variables. Variables raised to the power of integers are called as polynomials and are a different class of functions. But exponential functions grow very fast than polynomials with the increase in the value of the variable. To understand the growth of these functions take a si...
This video teaches us to draw the graph of a piecewise function. This is shown using two examples. In the first example we have 'y' equal to 'x + 2' for x less than zero and '1 - x' for x greater than equal to zero. We plot two points on the function for x less than zero and do the same for the function with x greater than equal to zero. The graph for the first function is erased for x greater than equal to zero, and the same is done for the second function for x less than zero. Note that the...
This video shows the method to plot the graph of the absolute value of a function. The video shows the example of the function of cube root of 'x'. The demonstrator first plots the graph of a cube root function. This is done by taking the reference point of positive one and positive eight. The graph is drawn for both negative and positive values of 'x'. After this the graph of absolute function is drawn by taking the absolute value of the cube root function. The resultant graph comes out to b...
The video shows the explanation of greatest integer function. This video explains this with the help of graphs. The video first describes the basic greatest integer function. This means the greatest integer less than or equal to the number gave. The graph of this function is drawn. The video then shows the variations of this function. The first variation shows the function that replaces the 'x' coordinate with it subtracted by three. This shifts the graph to the right by three units. The seco...
Check out this instructional math video that demonstrates how to calculate mathematical functions and graphs. In this 9th lesson, learn how to solve on SAT Algebra problems using the Official SAT Study Guide (as always). Here are the math problems and their page numbers that this video covers:
What does f(x) mean? What does g(4) mean? We explore this and more in this 3-part series, "Understanding Math Functions."
In this tutorial, we learn how to find the formula of a given sequence. First, you need to decide what you're starting with. Start with a1, then continue on with a2, a3, and a4. Eventually, you will have an "An". You will have an "n" in your numerator and the denominator will start between the numbers of your fractions. Look to see if that works, then you have to see where the signs alternate on the fractions. Write in any negatives that you have, then figure your power out. Once you follow t...
The pressure underwater is undeniably strong. If you were to fill a balloon with water and take it underwater, it would not burst but would stay the same size because liquids are not compressed. The pressure is the same, inside and outside of the balloon. If you were to fill that same balloon with air instead, the lower it dives into water, the more it shrinks, until it eventually can't take the pressure anymore and bursts.
If there's one thing we learned from high school show choir, it's that trying to scream out songs like your favorite pop artists will eventually ruin your voice and even scar your vocal chords so you'll never be able to sing well again. In fact, lots of famous pop musicians have had to get throat surgery later in life to correct all the damage they did to their vocal chords when they were younger.
It's really tempting to put every app and widget you can think of on your Android cell phone's home screen, but eventually you'll have a hard time finding anything in the clutter. That's where folders come in. Creating a folder on your home screen makes life a little easier, and a little more organized. Think about dragging all your games into a one consolidated folder. CNET shows you how to make a folder, how to rename it, and how to manage it on your Android smartphone.
In this video, we learn how to pronounce Arabic. There are families of letters to learn, that all have similar pronunciations. You will want to start out slow to learn how to say the different letters. Each letter can be pronounced up to three different ways. You will want to either have someone that already speaks Arabic to help you, or listen to audio so you know the sound. When you are reading these words, you will want to know what they sound like so you can completely understand the word...
In this video tutorial, viewers learn how to do a liquid nitrogen experiment. The materials required for this experiment are liquid nitrogen and film canisters. This task is very easy, fast and simple to do. Begin by pouring the liquid nitrogen into the film canisters. Then quickly place the film canister lids on. The liquid nitrogen will eventually become a boiling gas and expand about 700 times. Because of the expanding, the pressure will build in the canisters and result in popping lids. T...
First of all, hairpin lace is a knitting technique using a crochet hook and a hairpin lace loom, which consists simply of two parallel metal rods. To use the loom, you wrap yarn around the loops to form prongs, and eventually get a delicate lacy pattern.
Are you in your twenties but still dread looking in the mirror on some days because you still have old acne scars from when you were a teen? Learn how to fade old and new scars on your face by watching this tutorial, where you'll learn how to make a D.I.Y compressed face mask with lemon and cucumber.
Whether you're interested in learning Microsoft Excel from the bottom up or just looking to pick up a few tips and tricks, you've come to the right place. In this tutorial from everyone's favorite digital spreadsheet guru, ExcelIsFun, the 31st installment in his "Highline Excel Class" series of free video Excel lessons, you'll learn how to build frequency tables and simple histogram charts in Microsoft Excel. Specifically, this video addresses the following subjects:
All ballet shoes eventually get dirty. In this video, learn from one expert how canvas ballet shoes can be cleaned using calamine lotion that is dabbed onto the surface until stains are removed. Keep ballet shoes looking like new with this video conducted by an expert: Nene Ortega is a ballroom dance instructor at The Goddess Store in Hollywood, Florida. Learn more ballet from this expert by searching WonderHowTo! You're only practice time away from ruling the dance floor!
OuijaFreak shows viewers how to use a Ouija Board alone! First, you need to gently set the pointer on the board. Next, place your hands very lightly on the pointer. You'll want to be barely touching the pointer. Hold your wrists up and keep your hand off the table. Your hands cannot be heavy on the table - you need to keep everything light. First, you should ask if 'anyone is here' when using the board. A response can take even 20 minutes or even longer. You have to be patient. If you are not...
