3 Variables

How To : Produce a good tone on the cello

Justin Cantor discusses how to develop a good tone on the cello. Several techniques to get a range of sounds are discussed along with the variables, bow speed, pressure and contact point.

How To : Create running headers and footers in InDesign CS3

This video shows you how to use the new variables feature in InDesign to create running headers and footers. The exercise files in this tutorial use special fonts, including Memphis LT Std Bold and Bell Gothic Std Light. If you do not have these fonts installed on your compute ...more

How To : Seize Control of a Router with RouterSploit

A router is the core of anyone's internet experience, but most people don't spend much time setting up this critical piece of hardware. Old firmware, default passwords, and other configuration issues continue to haunt many organizations. Exploiting the poor, neglected computer ...more

How To : Security-Oriented C Tutorial 0x06 - Operators

Hello again! In this tutorial, we are going to go over something called "operators" which will help us build upon conditions of control structures and also some variable manipulation. Without further ado, let's dive in! What Is an Operator? Operators are special symbols whic ...more

How To : Use the Wedge ROP in Houdini 9.5

The Wedge ROP is a render output driver, which can be used to change variables on the fly while rendering. This can be very useful when simulating, in that you can test out different parameters to see the different results. It's a relatively new feature in Houdini 9.5. Wedgin ...more

How To : Program in Delphi

Ever wanted to become a programmer? This Delphi Training Series: Programming 101 is a sequence of training videos designed to teach the complete beginner how to become a programmer using Delphi. Episode 1 and 2: the viewer is shown where they can download the free Integrated D ...more

How To : Download & Setup Java JDK

How to install Java JDK (Java Development Kit) Go to the Oracle Java SE Download Page and click "Download". Next, click on "Accept" and select your operating system. Go through the install wizard. Go to start and right click on "My Computer" and click on "Properties". Cli ...more

How To : Understand Ohm's Law

This video teaches the basics of Ohm's law, which is an important equation in electrical engineering. The three variables which are used in this equation are V, which stands for voltage, I for current, and R for resistance. The equation for the law itself is I=V/R. This law de ...more

How To : Solve an equation for a specified variable

Need help wrapping your head around algebraic equations? Watch this free video lesson. 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 ...more

How To : Solve multivariable linear equations

Looking for instructions on how to solve linear equations with multiple variables and constant terms? Look no further. From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks t ...more

How To : Cancel out in basic algebra

This video gives you brief tutorial on simplifying expressions, or canceling out common factors. He starts out by answering the question "What is canceling?" and demonstrates a basic example. You find the greatest common factor between the numerator and denominator, which you ...more

How To : Use and find x & y-intercepts in algebra

A straight line can be represented in the form of a liner equation containing two variables x and y. When the equation is graphed on a pair of coordinate axes, the line passes cut through the axes in two points. The point where the line cuts the x-axes is called as its x coord ...more

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 whi ...more

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 po ...more

How To : Solve equations with fractions and decimals

In this tutorial the instructor shows how to solve equations with fractions and decimals. When you have a fraction first try to simplify it by canceling out the common factors in the numerator and the denominator. If there are any decimals convert them into fractions. Now if y ...more

How To : Factor and collect like terms

In this video, the instructor shows how to collect like terms and factorize. When you are given a linear equation, the first thing you do is to try to organize it. Pair up the like terms. Add the numerical coefficients of terms with the same variables. This is called collectin ...more

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 ...more

How To : Get breast implants

There is a wide rage of variables to consider when considering getting breast implants. This includes everything from if you are a good candidate, the type of implants, the size of the implants, the type of surgery, the size and the possible side-effects. Before you schedule ...more

How To : Use the Simple Trinomial factoring method

In this video, you will learn how to factor a simple trinomial. You will learn how to recognize a simple trinomial, and how to completely factor the trinomial. Also, it shows you how to factor square variables. The last example in the video explains how to factor out a negativ ...more

How To : Solve a two-step equation

This video is a detailed step by step explanation as how to solve a two step equation. The video provides an example of how to go about a two step equation problem and the steps necessary in order to solve for the value of one of the variables. This video uses very simple math ...more

How To : Calculate simple interest

Learn how to calculate simple interest with step-by-step instructions using the formula I=prt. Simply defined, interest equals principle times rate times time. The video shows various examples of calculating this formula by plugging different variables into the equation. Altho ...more

How To : Connect to a database & add data in PHP & MYSQL

MySQL is a database for serving data on the web. This video teaches viewers how to connect to a database and add data in PHP & MySQL. PHPMyAdmin is an interface that allows you to interact with MySQL more easily. Use the form in the program to create a database; choose the nam ...more

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-coordinat ...more

How To : Identify similar terms in polynomials

In this tutorial the instructor shows how to identify similar terms in a polynomial equation. He states that in similar terms the variables and their exponents are exactly the same but they may differ in the co-efficient. He shows how to identify similar terms by using some ex ...more

How To : Understand the central limit theorem

Central limit theorum is easily one of the most fundamental and profound concepts in statistics and perhaps in mathematics as a whole. In probability theory, the central limit theorum (CLT) states conditions under which the mean of a suffiently large number of independent rand ...more

How To : Use expressions in SSIS

Expressions are new in SSIS (meaning that they were not in DTS) but they allow you to create extremely flexible packages. Expressions can be used to assign values to variables, help you determine whether to execute a task, and to assign properties. If you ever found yourself w ...more

How To : Do quadratic equations

In order to work a quadratic equation, you should, first, try to simplify it. Try to move your variable to one side of the equation and the numerical values to the other. For example, in the equation 3n + 5n 2 = 0, you should try to move the 2 to the other side, by adding a po ...more

How To : Get Started Writing Your Own NSE Scripts for Nmap

The road to becoming a skilled white hat is paved with many milestones, one of those being learning how to perform a simple Nmap scan. A little further down that road lies more advanced scanning, along with utilizing a powerful feature of Nmap called the Nmap Scripting Engine. ...more

How To : Make Music with Floppy Drives & LabVIEW

Video: . Project Overview Have any old school floppy drives lying around? Get hacking... and transform them into an electronic orchestra! This project uses a myRIO embedded controller and four floppy disk drives. The myRIO effectively plays the disk drives like musical instru ...more

Today's Tidbit : Statistics Beat Taste Buds

As discussed in a previous tidbit, people are over-confident in their abilities for many reasons. Here's an example... The price of wine varies enormously by vintage. There is a HUGE industry in predicting which young wines will become expensive when they've aged. There are h ...more

How To : Hack UnrealIRCd Using Python Socket Programming

UnrealIRCd is an open-source IRC server that has been around since 1999 and is perhaps the most widely used one today. Version 3.2.8.1 was vulnerable to remote code execution due to a backdoor in the software. Today, we will be exploiting the vulnerability with Metasploit, exa ...more

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