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How To: Approximate the area under a curve using rectangles

The idea of finding the area under a curve is an important fundamental concept in calculus. Consider a function y = f(x). Now the area under the curve is to be calculated. The area under a curve problem is stated as 'Let f(x) be non negative on [a, b]. Find the area of the region lying beneath the curve y = f(x) and above the x-axes, from x = a to x = b. Note that finding the area under a curve will imply that you are dealing with a non negative function. The way to approach is to divide the ...

How To: Tune the three strings of any treble note on a piano

In this video tutorial, viewers learn how to tune a piano. Begin by placing a rubber tuning wedge in between to mute the two outer strings. Then tune the middle sting with a piano tuning hammer. Tune it to a strobe tuner or using intervals from already tuned strings. Now mute the right string and tune the left string. Use the middle string as reference. Then mute the left string and tune the right string. This video will benefit those viewers who have a piano, and would like to learn how to t...

How To: Tie the Eternity knot to decorate a rope or string

In this video the host of "Tying It All Together" demonstrates how to create a "Eternity Knot". This type of knot is an attractive way to decorate a rope or string. Strung along one after another on a rope or string, it creates elongated bead-like knots at intervals of your choosing. The Eternity Knot is named for it's resemblance to the symbol of Buddha's all-knowing wisdom and the uncommon quality of his realizations. In this video the host will lead you through the entire process of creati...

How to Make Indian food: Mutton curry

The author of this video tells her recipe for Mutton Curry, as well as shows the dish being made at different steps in the process. The dish is made with Mutton as the main ingredient, and includes ginger paste, garlic paste, yogurt, onions, various powdered spices, cloves, and salt. It is cooked in a pressure cooker, and she explains how everything should look at different intervals of cooking the dish. She explains that one might agree that minimum spices can be better than many different t...

How To: Do an easy cheat on Dead Frontier: Outbreak (09/20/09)

In this video tutorial, viewers learn how to cheat on the flash game Dead Frontier Outbreak. Dead Frontier Outbreak is a new promotional game released on multiple game sites by AdminPwn. It is a text-based zombie adventure game, complete with voice acting. It was created mainly to promote Dead Frontier among gamers who may not have heard of it. To perform this cheat, users simply right-click and select "forward until it reaches the end of the game." Users only need to do this three times. Thi...

How To: Get Android Alerts for When Your Favorite Websites Update Content

The problem with striving to be on the bleeding edge of what's new for your smartphone, or really anything else in life, is having to constantly check websites and forums for new content. And with lots of that browsing happening on our phones, the aimless page loading and refreshing is not just annoying when there isn't new content, but can lead to wasted data usage, not to mention time.

How To: Make great photo slideshows

This video provides tips to make great photo slideshows. Many people have found photo slideshows are a great way of celebrating memorable occasions, commemorate milestones or reminisce. First, choose your photo images carefully. Filter out irrelevant or blurry photos. Try using a photo editing program to improve your photos. Next, choose a theme for your slideshow. Then select transitions, being cautious to limit your use of transitions. Consider your use of intervals in the slideshow. Also, ...

How To: Use optimization methods in calculus

This video shows how to use optimization methods in calculus. Optimization means finding the maximum or minimum values of a quantity or finding when the maximum or minimum occurs.What quantities are optimized in economics?we want to minimize costs or maximize revenue.First steps in any optimization problem1.Identify the quantity to be optimized i.e., read the problem exactly what is exactly maximized or minimized.2.Identified the feasible domain. This is important because the math we can opti...

How To: Play "About a Girl" by Nirvana on guitar

Learning how to play Nirvana's "About a Girl" does not have to be difficult. Tbone Wilson shows what chords and at what intervals to strike them at to be able to play the guitar part of the song. Use the e power chord and the g chord. The chorus, which requires a few more chords than the introduction, is also taught in this video tutorial. You don't have to know how to read music to learn how to play "About a Girl" on the acoustic guitar.

How To: Drill through ceramic tile like a professional

In this video, we learn how to drill through ceramic tile like a professional. To do this you can use a normal bit that will drill through most tiles easily. Or, you can purchase a dedicated tile drill that will work the same way. First, find the area that you want to get started on and lay down some masking tape. Then, place the drill down on the area you want to drill through. Press on the drill power button doing small intervals at a time. Once you get into the hole, go full power and then...

How To: Clean a coffee machine milk frother

This video tutorial is in the Food category which will show you how to clean a Coffee Machine Milk Frother on Katarina. Take a jug with about 400 ml of water and pour about 50 ml of the cleaning liquid in it. Mix it and put the frother pipe in the jug and turn on the frother as if you were frothing milk. Run the entire mixture through the frother and thereafter run some clear water through the frother to remove the remnants of the cleaning agent from inside the frother. Repeat this process af...

How To: Create a time-lapse movie from still photos with a digital camera and iMovie

Ever wonder how people make those wonderful and awe-inspiring time-lapse films? Well, this video shows you the bare basics of creating a time-lapsed movie. First, you'll need to set your digital camera on a tripod and set it to take stills at your desired intervals. Then, you'll need to import all of these photographs into Aperture or iPhoto on your Mac computer. Then it comes times to turning those pics into a time-lapse film. Watch and see how!

How To: Win playing slot machines

In order to win at playing slot machines, you need to keep a few things in mind. Slot machines are not random. They are programmed to pay out at certain times, in certain amounts, and at certain intervals.

How To: Contain your sheep with hurdles

This video tutorial is in the Home & Garden category which will show you how to contain your sheep with hurdles. For this project you will need thin and long wooden staffs. This can also be done with bamboo. Split the wooden staffs in half. Take a heavy piece of timber and make holes in it at regular intervals. Place the timber at the boundary of the area where you want to contain your sheep. Then drive one unsplit wooden staff through each hole in the timber so that the end of the staff gets...

How To: Use curve sketching to solve equations in calculus

PatrickJMT takes you through step by step on the basics of how to use curve sketching to solve calculus equations. Steps that are covered in this two part video include domain, intercepts, symmetry, horizontal and vertical asymtotes, intervals of increase/decrease, local maximums and minimums, concavity and points of inflection, and finally the sketch. A rational function is looked at as an example. The problem is to graph y equals (x - 1) divided by x to the power of 2. This video clip cover...

How To: Play "twinkle, twinkle, little star" on the piano

If you want to play 'Twinkle, Twinkle little Star' on the piano you should first start on the note D. You should play the notes going up the scale to find that next work that matches the tone of when you sing it. When you find it, that interval is a fifth. Then, the song goes back down again in steps. Your melody will work in the scale of the notes that you have just played. There are three parts to the whole song that you should learn. You will use all the notes found in the D Major scale. N...

How To: Solve word problems involving exponential growth/decay

The first problem that is show is exponential decay. First you will need to create a table with hours and substance left. The next step is to find the trend by noting that we are left with a certain percentage of the substance. One you have the trend you will use this to calculate the amount of substance left in said hours, in this case 6 hours. The following example shows you how to solve exponential growth. It is essentially the same except for the fact that you will be increasing, so inste...

How To: Throw a wavy edged pottery bowl

This video illustrates the method of throwing a wavy edged pottery bowl. This process comprises of the following stepsStep 1This process needs clay, pottery wheel and water in a bowl.Step 2Place the clay on the moving wheel.Step 3Now give the clay a desired shape with the help of your hands.Step 4keep wetting your hands at desired intervals and insert your fingers inside the clay so that it gives you the shape of a bowl.Step 5When your desired shape and size is ready take the clay bowl out of...

How To: Tune your guitar, for beginners

This video shows you how to tune your guitar, for beginners. A step by step video tutorial for beginner guitar players that will teach you everything you need to know to tune your guitar properly. Andrew Wasson responds to viewers request to make a video for beginners that will properly teach them the steps to guitar tuning. Andrew addresses the fact that many similar videos about tuning completely skip the topic of "intervals". He explains with simple instructions how to tune your guitar to ...

How To: Find the area between curves

This video shows how to find areas between curves. The basic idea is that we find the space trapped between two curves on a graph. The formula for finding this is top curve, subtract bottom curve and then integrate. The presenter shows a parabola that goes through the origin. Then he draws a line that runs through the origin. We try to find the area trapped between the two. You take your smallest x co-ordinate to the largest x co-ordinate, you take the curve on top (2x) and subtract the curve...

How To: Get six pack abs with cardio & strength training

In this video, Yuri Elkaim will teach you how to get six pack abs using cardio and strength training. He breaks down the discussion of cardio vs. strength training for burning fat and building muscle. In the video, Elkaim stresses high-intensity interval training (HIIT), in which he says you will burn more calories, and therefore lose more fat if that is your aim. Furthermore, working at a higher intensity for longer periods of time increases your cardiovascular strength to an even higher deg...

How To: Do alternate nostril breathing in yoga

Yoga teacher Tara Stiles gives an informative video tutorial on how to do alternate nostril breathing in yoga. Tara warns that some first-timers might find this particular exercise a bit weird, but once they get a hang of it, it can be a boon for kick-starting one's day and relaxing one's mind and body. Then, she demonstrates the simple steps of breathing in and out, alternating the closing and opening of the nostrils. In closing, Tara cautioned that people who experience dizziness in the beg...

How To: Cut into a pomegranate

A simple yet effective technique which demonstrates how to best cut a pomegranate. Start by cutting out the upper part of the pomegranate. Afterwards continue by applying cuts from top to bottom at regular intervals all around the pomegranate. At this stage you can easily tear the pomegranate open thanks to the cuts applied. At this point you can easily gather the seeds from the pomegranate, in fact some of them start falling off on their own. Follow this video to learn how to best go about c...