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How To: Digitally sign and encrypt your email messages

The only people who should read your emails are you and your intended recipients. Protect your privacy with this simple crytography guide, which shows how to obtain a free certificate for signing and encrypting email messages, how to download and install the certificate on Mac OS X 10.5, and how to use the newly installed certificate in Apple Mail.

How To: Solve a 3x3 linear system using Cramer's Rule

In this video the instructor shows how to solve a 3 x 3 linear system using the Cramer's rule. In this kind of problem you are given three equations in three variables x, y, z and you need to solve for the values of these equations. You can solve this using the Cramer rule which says that the value of x is Dx/D, where Dx and D are two different determinate. Now you have to figure out the determinate to get the value of variable x. The determinate D is called the foundation determinate and is ...

How To: Factor a trinomial, GCF, then unfoil

In this video the instructor shows how to factor a polynomial. A polynomial having three terms is called as trinomial. Now if you factor it you will obtain two binomials whose product will be the original polynomial. Before factoring a polynomial you need to find out if the polynomial has a GCF. Look out for the common variables in all the three terms and pull them out which is the GCF of the polynomial. This simplifies the original equation to a polynomial which is of lower degree. Now facto...

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: Factor a trinomial with negative leading coefficient

In this video the instructor shows how to factor a trinomial with negative leading coefficient. Most of the students are confused when they have to factor a trinomial with a negative leading coefficient. But there are many ways to solve these kind of problems as shown in this video. One way you can do is that take out the greatest common factor (GCF) of -1 from the equation. So pulling the -1 gives you the original trinomial with all the signs of the terms changed. Now go on and factor the ne...

How To: Solve a quadratic equation

In this video the instructor shows how to solve a quadratic equation. If you have a quadratic equation with complex fractional terms and you find that a particular term is repeating then equate that term to a new variable and replace the variable in the given equation. Now try to get the equation a*x*x + b*x + c = 0, and solve for the roots of the equation which gives the values of the intermediate variable. But this variable was replaced instead of another term. So equate that term to the va...

How To: Identify the rear axle on a Jeep Cherokee

Richpin's Auto Repair shows you how to properly identify the rear axle of a Jeep Grand Cherokee. This information will allow you to obtain the correct information for replacing this specific automobile part. The video will show you where you need to look beneath the vehicle to find out which style of rear axle your Jeep Grand Cherokee has. You'll be shown where to clean the dirt off of a specific area of the axle to obtain this important information. In this particular case, the rear end axle...

How To: Factor a trinomial by GCF then grouping

In this tutorial the instructor shows how to factor a trinomial with Greatest Common Factor (GCF) and then how to group it. The first thing you have to do when you want to factor a trinomial is look for the GCF. First factor the numerical coefficients of the terms of the equation. Now separate out the common numerical factor and if any common variable. This leaves you with a binomial to be factored. Now to solve this multiply the numerical coefficients of the first term and the last term and ...

How To: Simplify a quadratic formula result

In this video the tutor shows how to simplify a quadratic formula result. You can solve a quadratic equation using the quadratic formula. The first thing you have to do when given the quadratic equation is bring all the terms to one side so that you have a zero on the other side of the equals to sign. Now the formula to calculate the roots of the quadratic equation ax*x + bx + c = 0 is x = (-b + root of(b*b - 4*a*c) ) / 2 * a. The other root can be obtained by using the minus sign before the ...

How To: Install VMware and Windows XP in Ubuntu

Software expert David Steinlage guides the viewer through the step-by-step process of installing VMware and Windows XP on a computer driven by Ubuntu Linux. The first step is to get a serial number, which can be obtained free by visiting the site www.vmware.com and filling out the registration form. The VMware installer application Automatix is then opened and upon clicking the desired options, the installation of VMware starts automatically. At the end of installation, the user is prompted t...

How To: Derive the equation of a straight line

In this tutorial the instructor shows how to derive a straight line equation. He shows us a process that consists of two steps. In step one he uses the slope formula to obtain the slope of the line which is the ratio of difference of y-coordinates and difference of x-coordinates. Now in the step two he uses the slope he obtained in the first step and equates it two a another slope derivation which uses a generic x, y variables and a real point. Now solving this equation he arrives at the equa...

How To: Tie the lambda knot using 450 nylon paracord

Whether you're doing it for decoration or just for fun, tying certain knots can be a difficult task for any person. It's a difficult hobby that most people could not stand to perform since it requires time and patience. Well if you're looking for help, this tutorial might be of some assistance. In the video, you'll find out how to take 450 nylon paracord and transform it into a lambda knot. Once complete it should look like a clover. So good luck and enjoy!

How To: Ride a horse on difficult terrain

Riding a horse is one of the most fun outdoor activities you can do. They're fast, fun, friendly animals and provide tons of exercise. If you are used to only riding your horse around a farm or riding path, you may not be prepared for rougher terrain. For example, riding a horse on the side of a hill can be new and scary to both the horse and the rider. In this tutorial, Rick Gore will show you how to prepare your horse for riding and feel safe on difficult footing. Follow along with this vid...

How To: Identify the cause of a noise coming from your car

When cars start to get older, their many fragile moving parts start to make noises they never made before. Sometimes, when your car starts making a new noise, it can be very difficult to identify what is causing the noise and what you need to do to repair it. This video offers some great tips for finding the source of different kinds of car noises, from engine noises to suspension noises.

How To: Improvise and play over Giant Steps on the guitar

Giant Steps is quite popular for being an incredibly difficult song to play seeing as it's a string of II, V, I chord changes in three different keys, among other changes that are inherent in the song. Thanks for making our lives more difficult Coltrane! If you're having trouble making your way around the neck and improvising this video can help! He talks about similar tonalities out of each chord change and scale connection between different keys. Just be careful because the audio goes out o...

How To: Find all hidden spiders on Scorpion in Spider-Man: Shattered Dimensions

Doing a full 100% completion playthrough is always a pain, especially when hidden collectibles come into the picture, and in Scorpions level, not only is he also kind of a pain, but finding some of the hidden spiders are difficult. In this great video you will get a walkthrough of each location, how to get into some of the tricker locations, and some great commentary explaining each section.

How To: Adjust to being alone after a divorce

In this video, we learn how to adjust to being alone after a divorce. Adjusting to life after divorce is difficult, but you can use solitude to help you. Each day, take some time to be completely alone, at least 15 minutes. Journal, paint, draw, or meditate to be alone. Pay attention to your inner self and give yourself the groundwork for success. Care for yourself and you will thrive. There will be life after a divorce, you just have to find your inner strength and start to build a new life....

How To: Defeat the bosses in Castlevania: Harmony of Despair

If you recently purchased Castlevania: Harmony of Despair on your Xbox 360, this next tutorial will help save your life. In this strategy how to tutorial, you'll find out how to defeat the game's most difficult enemies, the stage bosses. Each one has unique powers and attacks, but they also have some different weaknesses as well. They're easy to follow and should be easy to follow. Good luck and enjoy!

How To: Use bank shots to get off the wall in foosball

Foosball, the tiny table-based version of soccer, is one of the most popular games in fraternity houses and bars across America. It's great for bringing four people together, and is easy to learn but difficult to master. If you're looking to improve you game, watch this video. It will show you how to use bank shots to score more foosball goals and make you opponent look silly.

How To: Score goals with aerial shots in foosball

Foosball, the tiny table-based version of soccer, is one of the most popular games in fraternity houses and bars across America. It's great for bringing four people together, and is easy to learn but difficult to master. If you're looking to improve you game, watch this video. It will show you how to lift the ball off the table for aerial shots, which look really flashy and will score you goals if you can pull them off.

How To: Use brush passing to control the game in foosball

Foosball, the tiny table-based version of soccer, is one of the most popular games in fraternity houses and bars across America. It's great for bringing four people together, and is easy to learn but difficult to master. If you're looking to improve you game, watch this video. It will show you how you can use brush passing to confuse your opponent and win more games.