Environmental Variables Search Results

How To: Install the Java Development Kit to start programming

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.

How To: Simplify fractions with variables in basic algebra

Need help reducing fractions containing algebraic variables? Learn how with 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 ever to follow in their footsteps (or just finish your homework or study for that next big test).

How To: Solve an equation for a variable in Microsoft Excel

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 solve an equation for a variable in algebra.

How To: Do variable expressions problem

This video walks you through the steps on how to do variable expressions problem. This excellent video shows you a clean blackboard, with the instructors voice showing exactly what to do. Don't fret, any question you may have, will be answered. Watching this video will make you feel like your back in the classroom but rather comfortably from your home.

How To: Divide variables

This is a helpful video provided by Math Problem Generator. It deals with the complex challenges of dividing variables. The audio is great and provides specific examples of dealing with multiple types of this problem. The video lays out three simple steps. The first being to simplify the coefficient, the second being to divide the variable, and the third being to deal with the results of the division. The information is clearly presented and best of all it's free. I think we all wish there we...

How To: Massage data in Houdini 10

Get a crash course on HScript Expressions, Variables, and Attributes in Houdini 10. If you don't even know what this means, then you probably need to check this video tutorial series out. Understanding how to massage data in Houdini is key to giving yourself the creative edge and allowing you to unleash mind-blowing visual effects. This 18-part video series covers a variety of simple yet essential weapons in your arsenal including Global, Standard and Custom Variables to Math and String Modif...

How To: Find the variance of differences of random variables in statistics

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. For all of the details, watch this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, we learn how to calculate the variance of differences of random variables.

How To: Customize bash prompts with the PS1 variable

In this tutorial, we learn how to customize bash prompts with the PS1 variable. The PSI variable will say what something does. You can change this using the export command. Basically, you just type in the same thing and add in something. You can do this by simply typing it in using your keyboard. After this, press enter on your keyboard, then continue to change more things. There are a ton of different things you can do with this. You can find more from the website: http://pastebin.com/f2309f...

How To: Simplify complex fractions with variables

In order to simplify complex variables, you must first consider the numerical values separate from the variable. In the case of 24x/48x, you would look at the numbers alone to see if they have any factors. These numbers have the number 6 in common. So, divide it by 6. This will give you 4/8. This still requires some simplification. Two is still a factor for both. So, divide it again by four. This will give you 1/2. Now, if the numerator was raised to the second power, in the original equation...

How To: Solve an algebraic expression with given variables

Need help figuring out how to solve an equation with given variables in algebra? Learn how with this free video math 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 ever to follow in their footsteps (or just finish your homework or study for that next big test).

How To: Solve single-variable algebraic equations

Need to know how to solve simple, single-variable equations in algebra? Learn how with 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 ever to follow in their footsteps (or just finish your homework or study for that next big test).

How To: Create a scatter diagram for 2 variables in Excel

If you use Microsoft Excel on a regular basis, odds are you work with numbers. Put those numbers to work. Statistical analysis allows you to find patterns, trends and probabilities within your data. In this MS Excel tutorial from everyone's favorite Excel guru, YouTube's ExcelsFun, the 30th installment in his "Excel Statistics" series of free video lessons, you'll learn how to create a scatter diagram for 2 quantitative variables.

How To: Do a two-variable lookup given duplicates in MS Excel

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 225th installment in their series of digital spreadsheet magic tricks, you'll learn how to do a two-variable lookup when there are duplicates using the INDEX, IF, ROW and MAX functions.

How To: Encrypt batch files with variables

Encryption is the process of converting you data in to other obscure form so that no one can read it. Encryption can also be done using batch files. Batch files are scripting programs in windows which can be used to program small automatic operations. To do this open a notepad to write the batch program. First turn of the echo by inserting the command '@echo off'. Now write the rest of the program as shown in the video. Now save the image as a bat file. Now you can encrypt this batch file. To...

How To: Use the substitution method to solve problems

This video teaches you how to use substitution to find the point on a graph (the x and y coordinates) where two separate equations would cross. Substitution is a trick of algebra that allows you to find this point without making a graph. The first step is to isolate one of the variables (x or y) in one of the equations. That way, you know that that variable is equal to everything on the other side of the equals sign from it. You can then take that whole side, and substitute it into the other ...

How To: Identify the numerical coefficient of a monomial

In this tutorial the instructor discusses about the numeric coefficients that we come across while we work with polynomials. He goes on to discuss the numerical coefficient of a monomial stating that it is the number that is present before the variable in the monomial. He states that the numerical coefficient can also be negative or if there is no number present in front of the variable, it indicates that the numerical coefficient is one. This video helps in understanding what the numerical c...

How To: Pass info from one page to another with a query string

In this video tutorial, Chris Pels will show how information can be passed from one page to another using a query string. First, see how to construct a query string including variable names and values from information on a data entry form. Next, see how to access the query string information when the page is posted including how multiple query string variables are handled. As part of the server side processing of query string information, see how to implement validation for existence of query...

How To: Create secondary motion with keyframes in Blender

In this tutorial, you'll learn how to create secondary motion without any simulations like softbody for your characters clothing, accessories, even hair! This method can also be applied to environmental animation. Whether you're new to the Blender Foundation's popular 3D modeling program or a seasoned graphic artist just interested in better acquainting yourself with the application, you're sure to be well served by this free video tutorial. For more information, including detailed instructio...

Exploit Development: How to Read & Write to a Program's Memory Using a Format String Vulnerability

Format strings are a handy way for programmers to whip up a string from several variables. They are designed to save the programmer time and allow their code to look much cleaner. Unbeknownst to some programmers, format strings can also be used by an attacker to compromise their entire program. In this guide, we are going to look at just how we can use a format string to exploit a running program.

How To: Security-Oriented C Tutorial 0x0B - User Input

Hey readers! This tutorial will be the entry point for the introduction of buffer overflows. Something like requesting user input is a very common place for vulnerabilities to pop up and we will definitely have fun while trying to make programs crash. But for now, let's start with how we can get input from a user.

How To: Perl for the Aspiring Hacker - Part 1 - Variables

Before I start a series on remote exploitation, I think we should learn the basics of Perl. Perl, Ruby, C, C++, Cython and more are languages that some penetration testers just need to learn. Perl is a great language for multiple things, sadly, like many other scripting languages, it is limited by the environment in which it is designed to work in.

How To: Build a habitat for your Leopard Gecko

Do you know what part of the world the Leopard Gecko comes from? Does it like its home to be dry, wet, or somewhere in between? Do they like to climb trees and plants? Follow Host Hillary Dupont and ReptilesTV's Senior Herpetologist Ron Dupont as they discuss the environmental and habitat needs of your Leopard Gecko.

How To: Design an African spur-thighed tortoise habitat

Join Host Israel Dupont with herpetologist Hillary Dupont as they discuss creating a habitat for your African spur-thighed/G. Sulcata tortoise. Hillary explains the tortoise's natural geographic location, its environmental requirements. And she and Israel begin designing the habitat with the substrate (bedding) and décor/enrichment elements.

How To: Understand nth roots and operations on radicals

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...

How To: Graph linear inequalities in two variables 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. With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to graph a linear equation in two variables in intermediate algebra.

How To: Use the variable tee drill to cure a pull shot in golf

This video is on Golf and will show you how to use the variable tee drill to cure a pull shot in golf. This video is from Golf Link. A typical problem for somebody who tends to pull the ball is they position the ball too far forward. So, when they are setting up, the shoulders are actually looking left. By the time the club head reaches the ball during the swing, they are swinging around to the left producing the pull. The variable ball position drill will cure this problem. Place a club on t...