In this video the instructor shows who to simplify radicals. If you have a term inside a square root the first thing you need to do is try to factorize it. First factorize the numerical term. Write down the numerical terms as a product of any perfect squares. Now split the original radical expression in the form of individual terms of different variables. Now you can pull out the perfect square numerical factors out of the radical. Similarly for the variable terms write the variables as power...
In this video the instructor shows how to use proportions to solve fractions. When you have a proportions problem with an unknown term, cross multiply and divide it to get the value of that unknown term. For example if given 7/8 = m/4, cross multiply 7/8 with 4, giving 7/2 which is the value of the unknown variable m. So if two quantities are proportionate then you can equate them as shown in the video and cross multiply to get the value of any unknown variable. Proportions are just fractions...
In this video the instructor teaches about direct and inverse variation. Two variables x and y are said to be in direct variation with each other if you can write them in the form y = K * x. The value of y varies directly corresponding to the value of x. Y is said to be directly proportional to x. If you have a sample value of x and y, you can substitute the values in the above equation to compute the value of the constant K. Using this formula you can always find the value of one variable x ...
This video is about using the elimination method to solve a linear system. The lady presenting this video says that elimination method means that one of the two variables has to be eliminated while adding up the two linear equations. She then explains the example equations 6x-2y=66 and 5y=-29-2x. She asks you to first line up x and y. So the second equation is rewritten as 2x+5y=-29. Then she says that, to eliminate a variable, we should have their variables equal in value but of opposite sig...
This video will show you the simple mathematical concept of solving a single-step equation using multiplication. This is very useful for equations in which you need to solve for a variable and the variable is a part of a fraction. The example provided in the video shows a very fast and simple way to solve these types of problems. By multiplying your fraction by the denominator of the fraction, you will cancel out the fraction and multiply the other side by the same number. By following these ...
In this tutorial the instructor shows how to solve ratios and proportions. He gives a two step approach to solve an equality of two fractions in which the value of a variable in unknown. He says that in the first step we should cross multiply the numbers across the diagonal. In the second step we need to divide and simplify to get the value of the unknown variable. This video gives a simple two step method on how to solve ratios and proportions.
This video explains how to solve a single variable linear equation. Keep in mind that your equation should be in the form ax + b = c. The goal is to solve for x. Isolate the variable. Begin by subtracting b from both sides of the equation. Look at your new equation. It should now be in the form ax = c - b. Solve for x by dividing both sides by a. Your expression is now in the form x = (c - b)/a. You have solved the expression for x.
In this video tutorial the instructor shows how to solve a single-step equation by taking the reciprocal. He says that in the equations of fractions containing a variable on the one side, you multiply the reciprocal of its numerical constant to it so that only the variable x stays out. Similarly we need to multiply the reciprocal value that we used on the left hand side on the right hand side too to maintain the equality. Now after simplification as only x is left on the one side we get its v...
If you want to learn how to program in the Java language, then the first thing you're going to need to do is download and install the JDK. That stands for Java Development Kit, and is the basis for anyone begging in Java, and you need it to get the Javac (Java compiler) running. This video will show you what to do, and will show you how to set a new variable name and value in the Environment Variables under Advanced System Settings on your Windows PC.
Why did I write this when they're tons of scanning tools available.
Welcome back, my greenhorn hackers! Recently, I asked the Null Byte community what subject they would most like me to cover in future tutorials. Many of you cited scripting, and I decided it's best to cover this subject soon, so here goes.
Solving Equations with Fractions Using Addition In our first example, our equation is b - 11/10 = -13/5
Whether you're interested in learning Microsoft Excel from the bottom up or just looking to pick up a few tips and tricks, you're in the right place. In this tutorial from everyone's favorite digital spreadsheet guru, ExcelIsFun, the 26th installment in his "Highline Excel Class" series of free video Excel lessons, you'll learn how to use spreadsheet construction guidelines to fix common problems:
New to Excel? Looking for a tip? How about a tip so mind-blowingly advanced as to qualify as a magic trick? You're in luck. In this Excel tutorial from ExcelIsFun, the 480th installment in their series of digital spreadsheet magic tricks, you'll learn how to calculate a percentage of total from a database data set when the variable of interest is text (word). This is accomplished with recourse to the COUNTIF, SUM & COUNTA functions.
This is a video about "How to Hack: Demolition City 2" by Travis. This is a flash game. To begin hacking, go to the game and enter the first level. At this point, you do not have any cash. Specify that you are using Mozilla in the cheat engine. After you have completed the first level, write "double" variable in value type and then type the value for the first level, and you can easily notice the game appearance seems to be changed, because the second level of the game consists of first level...
The first operations you will need to know when learning to use algebra to solve for an unknown variable “x” will be using addition and subtraction. You can check you work by checking the balance of the equation when you are done.
In this tutorial the author shows how to find out the missing part of a triangle that is similar to another triangle. He explains the concept of similar triangle diagrammatically by showing that similar triangles have similar angles and parallel sides. Now he labels sides of similar triangles and marks the value of unknown side as variable x. Now in similar triangles as the lengths of sides of proportionate he shows how to write a equation of proportion and solves it finding the missing part ...
This video teaches us the concept of nth roots. The video starts with the square root of constants. We find the number which when multiplies by itself for two times results in the constant inside the square root. Then we find the square root of variables. Here again the same concept is used. We find the variable which when multiplied by itself for two times results in the given variable. Then we find the cube root. Here we find the number which when multiplied by itself for three times result...
In this tutorial you are shown exactly how to do algebraic long division when terms are missing in the polynomial. Follow these steps and you can divide whatever you'd like:
This lesson describes the method to find the factors of a trinomial, which consists of three terms, by grouping. First of all, factor out the greatest common factor (GCF), and write the reduced trinomial in parentheses. Let the terms of the trinomial be written in order of exponent of the variable. For example, 3(3X2+2X-8) trinomial is written in the order of variable, with 3(GCF) factored out. Now identify the coefficient of the first and last terms, for example in this case, it is 3 and 8. ...
This video will show you how to drill a clean hole in ceramic, porcelain, clay, glass or tile. Materials needed for this project are: carbide tile bit, normal variable speed drill (not a hammer drill), air tool oil, plumbers putty, MDF board or a scrap piece of wood.
System of equations is nothing but a system which contains more than one linear equations. This system of equations can be solved to arrive at the solution of the system. A simple system of the linear equations can be a pair of equations. To solve this kind of system you can employ the substitution method. So take the two equation of the system. Solve for the value of y in the first equation in terms of x. Now take this value of y and substitute in the second equation y value. Now the second ...
Eagle Lake Woodworking, hosted by John Nixon, offers great do-it-yourself guides for building your own furniture, especially in the American Arts and Crafts style, and turning your garage into an amateur woodshop. Search Eagle Lake on WonderHowTo for more carpentry tutorial videos. From Eagle Lake Woodworking on this specific lesson:
Welcome to my tutorial where Voidx and I will be expanding on my previous article to provide more clarity into the logic of the code.
Welcome back, my budding hackers! I began this series on Linux basics because several of you have expressed befuddlement at working with BackTrack on Linux. As a hacker, there is no substitute for Linux skills.
Learn to utilize SimpleXML in this PHP tutorial to load and access XML from within PHP. This video shows how to load an XML file into a PHP array variable and get values from within that array. This informative video from JREAMdesign shows you step by step.
When you're programming in Python, and make a variable into a string, that becomes an object. This tutorial shows you how to use string methods and object methods when you're teaching yourself how to write a program using the Python language.
You can take a piece of completely modern digital footage and give it an aged, antique feel! You will need the Aged Film plugin for Adobe After Effects, which lets you create the sepia tone and flickering, variable speed look of antique film clips.
This free video science lesson from YouTube's Mindpaint demonstrates a simple technique for creating a non-Newtonian fluid with a presure-variable viscosity. For all of the relevant details and detailed, step-by-step instructions, as well as to get started trying this experiment yourself, watch this home-science how-to.
If you don't want to buy your links pre-made, you can coil your own links. You'll need wire (sixteen gauge is the most common), metal dowel rods in the diameter you want, variable speed drills, wire cutters and at least two pair of pliers.
In this clip, you'll learn how to return a variable value from a method when coding in Java. Whether you're new to the Java object-oriented programming language or are a seasoned developer merely looking to improve your chops, you're sure to find benefit in this free video programming lesson. For more information, including detailed, step-by-step instructions, take a look.
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 254th installment in their series of digital spreadsheet magic tricks, you'll learn how to do contribution margin income statement analysis across various units using a one-variable data table.
What's better than Microsoft Excel's conditional formatting feature? Microsoft Excel's conditional formatting feature when used with multiple criteria, that's what! In this Excel tutorial from ExcelIsFun, the 544th installment in their series of Excel magic tricks, you'll learn how to build multi-variable conditional formatting formulas using the TRUE, FALSE and AND operators.
Watch this video to learn how to use void functions with C++. The video also covers the use of more than one return statement, immediate return, and variable scope/visibility.
Today's word is "capricious". This is an adjective which means variable or erratic.
This demonstrates how to wire a 555 timer chip for Pulse Width Modulation. Items used: solderless breadboard, 555 chip, 510 ohm resistor, 100k ohm variable resistor, 1 RGB LED at 20-25ma, wires, and 9v battery. And those vertical lines are what i mean in terms of what you can see only on the camera. You can see the led light of course without the camera.
Bash scripting is a convenient way to automate things on any Linux system, and we're going to use it here to automate certain tasks we use all the time.
Factorization of a trinomial can be achieved by using the standard method of appropriately "splitting the middle term" or by this method as shown in the video.
Solving equations involving fractional powers of a variable are not that hard to solve as they sound. In fact, just watch this video to learn a few tips and solving these type of equations will become a little bit easier.
In this video, we learn how to solve a single-step equation using multiplication. For the first step, get rid of any number surrounding the variable. To do this, you will need to multiply the numbers around it by their opposite to make them equal zero. Once you have done this, you will need to repeat the process on the other side of the equal sign. Just do the same exact thing you did in the first step, then you will be able to easily solve the problem at hand. You can check your answer by re...
