This video explains the process of simplifying an algebraic expression with negative exponents. The video starts with an example of such an algebraic expression; the expression contains negative powers in both the numerator and denominator. The location of the negative exponents is first pointed out visually. Next, it is observed that there are like based or variables in both the numerator and denominator; however, it is explained that the numerator must first be expanded before the expressio...
This video demonstrates the quotient rule as applied to exponential expressions that appear in the form of, to use the word loosely, a fraction. The name, "quotient rule", refers to the fact that it applies to expressions which are divided by other expressions. The video begins by explaining that the quotient rule allows expressions in this form to be simplified if they contain like bases (i.e., the terms are of the same variable). The quotient rule allows the expression to be simplified by s...
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.
What's up, peeps? In this quick tutorial, we will be looking at structs, a special kind of data type.
Need to make a custom, digital clock that will run in all major desktop and smartphone browsers? This tutorial shows you how to employ Javascript functions to communicate in real time with web page elements to get a slick CSS animated clock. Cool, eh?
There are four variables a digital photographer must keep in mind when shooting pictures to ensure correct exposure: ambient light, shutter speed, f-stop and ISO. Also, keep all your images crisp and sharp, even if you're shooting in a low-light setting.
This is a basic lesson with an intro for arrays in the C# programming language. You'll learn how to create and declare and add date to a C# array. An array is a data structure, or object, that contains several variables of the same type. Learn all about it!
Love Microsoft Excel? This clip contains a tip that just might induce you to. With this free video tutorial from ExcelIsFun, the 51st installment of his "YouTubers Love Excel" or YTLE series of free video MS Excel lessons, you'll learn how to use a VLOOKUP function inside a Text Formula to add a variable word (e.g., Annual, Semi-Annual, Quarterly, Monthly, or Weekly).
Chest hooping is no more complicated than spinning at the waist, and has a great variety of movement possibilities because of the variable choices of arm and shoulder placement. Safire, expert hula hoop dancer, walks through the simple steps of doing this stunt, breaking down each movement to exact body positions and also thoroughly explaining any of the hula hoop choreography terminology she uses. Watch this video hula hoop tutorial and learn how to rotate a hula hoop at chest level.
While our time with the Protostar VM from Exploit Exercises was lovely, we must move on to bigger things and harder challenges. Exploit Exercises' Fusion VM offers some more challenging binary exploitation levels for us to tackle. The biggest change is that these levels are all network services, which means we'll write our first remote exploits.
What's up readers? Today I'll be introducing to you a new vulnerability called the Format String vulnerability (in case you missed the title). It won't be much, just a little motivation to keep you guys going. A little teaser, if you may.
Welcome back, my fledgling hackers! In an earlier tutorial, I introduced you to probably the most popular scripting language for hackers, Python. To become a professional hacker, you need to have some scripting skills and Python is a good choice if you want to master just one. In this latest guide, I will expand your background in Python and offer you a tidbit of Python code to whet your appetite for all of the hacking to come.
How to install Java JDK (Java Development Kit) Go to the Oracle Java SE Download Page and click "Download".
Programming is an essential thing in hacking/pentesting, and at times, I do not feel that it is being addressed enough here, at Null-byte. I understand that this is a forum dedicated for hacking, but I'll address some of the stuff I feel is muy importante about programming. I am not a professional programmer, but I do have experience and I do want to share some of the stuff professionals have taught me.
As you might know, there are a multitude of tools used to discover internal IP addresses. Many of these tools use ARP, address resolution protocol, in order to find live internal hosts. If we could write a script using this protocol, we would be able to scan for hosts on a given network. This is where scapy and python come in, scapy has modules we can import into python, enabling us to construct some tools of our own, which is exactly what we'll be doing here.
Change object colors via ActionScript in Flash 8
Welcome to Google's Python Class – a seven-segment, two-part free virtual class for people with a little bit of programming experience who want to learn Python. The class includes written materials, lecture videos, and lots of code exercises to practice Python coding. The first exercises work on basic Python concepts like strings and lists, building up to the later exercises which are full programs dealing with text files, processes, and http connections. The class is geared for people who ha...
Welcome back to another tutorial on functions. Last time, we looked inside memory to see what functions looked like in the flesh and all that Assembly was pretty nasty. At least you have some exposure to it. This time, we will be examining how functions work with the stack.
Why did I write this when they're tons of scanning tools available.
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.
Arrays are little pockets of data distributed throughout your program. They're useful because having arrays keeps you from needing to work with hundreds of variables when programming. This specific tutorial shows you how to work with arrays when you're using Java to program.
So you've mastered variables, and now it's time to take a look at functions and how they work on the very basic level in Python. This tutorial also takes a brief look at importing modules, and how they work in your Python program.
So you've already mastered variables and functions - now it's time to progress to strings, substrings and slices when you're working on a program using the Python programming language. Python strings are much less complex than in other languages, which makes them easy to use.
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 employ variables and arrays to generate a form letter when coding in PHP. Whether you're new to the PHP: Hypertext Preprocessor scripting language or are a seasoned web 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.
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.
Need help figuring out how to solve simple algebraic equations? 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).
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 269th installment in their series of digital spreadsheet magic tricks, you'll learn how to get criteria from four (4) different cells and combine (join) them into one criterion for the COUNTIF function.
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 instructional cello playing video to learn how to create a sound on the cello. The sound production is composed of the various elements used to create the sound on the cello. There are three variables that determine the kind of sound produced: how much weight will you put into the string, the speed of the bow, where you put the bow. This tutorial is great for beginning cello players.
Watch this video to learn how to create OOP design with C++. This video also covers public and private variables and functions.
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.
YouTube Hack! Youtube now uses a new gdata format and doesn't require a developer key. It also added a whole bunch more variables you can attach to the query string making things possible that weren't before.
