### How To: Find the complex conjugate of a complex number

Need a little help with your math homework? No problem, the Math Centre offers students video tutorials that will provide as a reference guide for self-study. Students get self-study resources targeted to the needs of individual courses, and teachers gain generic mathematics support and study materials for use with students.

### Hack Like a Pro: How to Crack User Passwords in a Linux System

Welcome back, my eager hackers! In recent blogs, I've demonstrated how to grab password hashes remotely using Metasploit's meterpreter and pwdump. Once we have the Windows passwords from the SAM file, we can then crack these hashes using tools such as Cain and Abel.

### How To: Find the sum of reciprocals of complex numbers

In this tutorial the instructor shows how to calculate the sum of reciprocals of complex numbers. If you have to find out the sum of the reciprocals of two complex numbers first you will have to find out the least common multiple of the denominators. To do this multiply the numerator and denominator of the first fraction by the second complex number. Similarly multiply the numerator and denominator of the second fraction by the first complex number. Now you will have two fractions whose denom...

### How To: Multiply complex polynomials in algebra

Faced with a tricky polynomial multiplication problem? Need some help figuring out how to solve it? See how it's done with this five-part free video algebra 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: Simplify complex fractions in algebra

Being circuitous and using ample euphemisms has gotten many a politan elected by the dumb and hated by the knowing. Though embellishing speech is often preferred in jovial presidential debates, mathematicians prefer to cut out the fat and get straight to the point.

### How To: Add and subtract complex numbers

Need a little help with your math homework? No problem, the Math Centre offers students video tutorials that will provide as a reference guide for self-study. Students get self-study resources targeted to the needs of individual courses, and teachers gain generic mathematics support and study materials for use with students.

### How To: Find real and imaginary parts of a complex number

Need a little help with your math homework? No problem, the Math Centre offers students video tutorials that will provide as a reference guide for self-study. Students get self-study resources targeted to the needs of individual courses, and teachers gain generic mathematics support and study materials for use with students.

### How To: Divide complex numbers

Need a little help with your math homework? No problem, the Math Centre offers students video tutorials that will provide as a reference guide for self-study. Students get self-study resources targeted to the needs of individual courses, and teachers gain generic mathematics support and study materials for use with students.

### How To: Write the square root of a negative complex number

Need a little help with your math homework? No problem, the Math Centre offers students video tutorials that will provide as a reference guide for self-study. Students get self-study resources targeted to the needs of individual courses, and teachers gain generic mathematics support and study materials for use with students.

### How To: Multiply complex numbers

Need a little help with your math homework? No problem, the Math Centre offers students video tutorials that will provide as a reference guide for self-study. Students get self-study resources targeted to the needs of individual courses, and teachers gain generic mathematics support and study materials for use with students.

### How To: Represent complex numbers with the Argand Diagram

Need a little help with your math homework? No problem, the Math Centre offers students video tutorials that will provide as a reference guide for self-study. Students get self-study resources targeted to the needs of individual courses, and teachers gain generic mathematics support and study materials for use with students.

### How To: Calculate the modulus and argument of a complex number

Need a little help with your math homework? No problem, the Math Centre offers students video tutorials that will provide as a reference guide for self-study. Students get self-study resources targeted to the needs of individual courses, and teachers gain generic mathematics support and study materials for use with students.

### How To: Find the polar form of a complex number

Need a little help with your math homework? No problem, the Math Centre offers students video tutorials that will provide as a reference guide for self-study. Students get self-study resources targeted to the needs of individual courses, and teachers gain generic mathematics support and study materials for use with students.

### How To: Find the perimeter & area of a complex figure

In this video tutorial the author shows how to find the perimeter and area of a complex figure. He shows that a complex figure can be subdivided into standard geometric figures. In the current example he divides the complex figure into a rectangle and a triangle. Now he computes the perimeter by adding the three sides of the rectangle and the two sides of the triangle. Similarly he computes the individual areas of the rectangle and the triangle and finally adds then up to find the area of the...

When it comes to passwords, the longer and more complex they are, the better the security. Even professional hackers say so. But if you've ever tried to type in such a password, you've surely noticed that it can be a bit of a pain. Mistype one character, and you're probably going to have to clear the field and start all over again.

### Hack Like a Pro: How to Crack Passwords, Part 4 (Creating a Custom Wordlist with Crunch)

Welcome back, my apprentice hackers! In this series on password cracking, I have been attempting to develop your skills in the age-old art of password cracking. Although it might seem like a simple and straightforward exercise, those of you who have attempted password cracking know that there are many subtleties to this art.

### How To: Divide complex numbers in algebra

This series on complex numbers will help you solve equations with the cute variable "i" with ease by multiplying by the conjugate.

### How To: Find the area of complex figures

In this tutorial the author explains how to compute the area of a complex figure. Now he first defines what a complex figure is by saying that a complex figure is a figure made up of two or more basic shapes. He uses an example to convey his idea and breaks that sample figure into basic squares and rectangles. Now he computes the areas of these individual units separately and finally puts them together to arrive at the final area of the complex figure. If you are looking to compute the area o...

### How To: Hack LAN passwords with Ettercap

Want to hack a LAN? Well, hacking local area networks is easier than you'd think. And by watching a few short videos, you can become a master hacker, something every techie wants to achieve. And what's the best way to hack a LAN? Ettercap, a password sniffing program.

### How To: Stitch a complex filet crochet and read graphs

How To Filet Crochet - Part 1 We we first heard the term "filet crochet," an image popped up in our minds of chicken fillets from McDonald's, only made from crochet yarn (yes, we were also quite hungry at the time). Well, we'll have to save the yarn foods for another time, because a filet crochet is actually a very complex, difficult crocheting pattern that requires a graph in order to get the stitches right.

### How To: Use salty hashes to keep passwords secure

In this tutorial, we learn how to use salty hashes to keep passwords secure. A hash is stored in a database that is hashed with an algorithm, so not everyone can see exactly what your password is. When you type your password into a website, it doesn't actually register as words, it registers as a hash. This keeps your passwords secure so not everyone can see them. Salting is when you use random pits and attaching them to your regular hashes so not every password is the same. The salt is what ...

### How To: Simplify and rewrite the complex number "i"

The powers of the complex number "i" run their course in a cyclical nature, like annual seasons of "American Idol." Simplify your life - or at least your math class life - by learning how to rewrite the powers of "i" into simple, single variable expressions.

### How To: Add and substract complex numbers in algebra

Math has always had the reputation of being nonimaginative, dry, and straight to the point, but mathematicians like to have fun, too! Perhaps that's why they invented imaginary complex numbers dealing with "i."

### How To: Simplify complex fraction

In this video the instructor shows how to simplify a complex fraction. A complex fraction is a fraction that has fractions in both the numerator and the denominator of the original fraction. Complex fractions can look intimidating but are generally simple to solve, as shown in this video. A fraction is nothing but a division of its numerator and its denominator. So in a complex fraction basically you are dividing two fractions. Now you can turn this division into multiplication by multiplying...

### How To: Hack a Site Knowing a Bit of HTML (hackthissite.org) Part 1

After you have registered to this site,sign in then to start missions. Basic Missions

People who know that I am a professional hacker often ask me what they can do to make their computers and personal information safe from people like me. The answer, of course, is that nothing will make you completely safe, but there are a number of measures any computer user can take to reduce the chances of being a victim of a hacker.

### How To: Earn the 'Kervorkian Complex' achievement in Deus Ex: Human Revolution

The 'Kervorkian Complex' achievement is only accessible while playing the Acquaintances Forgotten side quest in Deus Ex: Human Revolution on the Xbox 360. During the dialogue options, you'll need to continue to agree with Brent Radford until he allows you to kill him with morphine--at this point the achievement will unlock.

### How To: Create a complex animation quickly in After Effects by using precomping

Start a complex animation that only has a few keyframes by using precomping! This is a simple yet powerful technique that can really open up your ability to get the most out of creating fun animations using Adobe After Effects.

### How To: Build complex layouts in Adobe InDesign CS5

Whether you're new to Adobe InDesign or a seasoned graphic arts professional after a general overview of CS5's most vital new features, you're sure to be well served by this official video tutorial from the folks at Adobe TV. In it, you'll learn how to build complex layouts in less clicks with paragraphs that span or split columns in InDesign CS5.

### How To: Make complex selections easily in Adobe Photoshop CS5

We don't know about you, but making selections around oddly shaped areas of an image is one of the most frustrating single tasks in Photoshop. Odd shapes are really hard to navigate around by hand and often you can't get a perfect cut. Luckily, this Photoshop tutorial will guide you through how to make complex selections easily in Adobe Photoshop CS5.

### How To: Fold a complex dodecahedron using modular origami

While basic origami allows for the usage of only one sheet of paper, modular origami increases up to many sheets of paper allowing for increasingly complex shapes. This video tutorial shows how to use the Japanese art of modular origami to create a dodecahedron. Start watching and start folding!

### How To: Rewrite radicals using complex numbers

A complex number is half real (a) and half imaginary (bi), just like that Edward Cullen who makes your heart thump realistically but whose sparkly chest makes you wonder if he's something more.

### How To: Protect PDFs with a password in Adobe Acrobat 9 Pro

In order to secure a PDF with a password when opened in Adobe Acrobat 9 Pro, press the secure button and go into password security settings. Here you can change on what versions of this software the file will run on, the next option asks which portion of the document is to be encrypted when a password is placed. Further below here is where you actually choose the password, this ensures that only people who know the password will be able to see the contents of the document. Below this is the d...