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How To: Solve math problems with the commutative law of addition

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 unpack and solve word problems requiring use of the commutative law of addition.

How To: Solve math problems with the commutative law of multiplication

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 unpack and solve word problems requiring use of the commutative law of addition.

How To: Solve math problems with the associative law of addition

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 unpack and solve word problems requiring use of the associative law of addition.

How To: Solve math problems with the associative law of multiplication

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 unpack and solve problems requiring use of the associate law of multiplication.

How To: Rural surveillance

If you are law enforcement or find yourself in an emergency situation you may need to know how to properly conduct surveillance in a rural area. You will have to gather information without being scene and will need different techniques when out in the wilderness.

How To: Use the laws of logarithms

ProfessorElvisZap teaches you about the laws of logarithms. When x is positive, meaning 0<x. x times y equals y times x. This is the commutative property. x times (y times z) equals (x times y) times z. This is the associative property. x times 1 equals x. This is the multiplicative property. x times x to the power of -1 equals 1. This is the multiplicative inverse property. You can use these properties with addition: a+b=b+a, (a+b)+c=a+(b+c), a+0=a and a+(-a)=0. A logarithm is a homomorphism...

How To: Apply the 1st Law of Exponents

In this video tutorial the author explains the concept of 1st Law of Exponents using an example. He shows that when we add polynomials the exponents does not change but when you multiply two polynomials their exponents change. He says that the new exponent is the sum of the first polynomial exponent and the second polynomial exponent. He further demonstrates this with a good example. This video clear shows with an example about the concept of the 1st Law of Exponents using it to multiply two ...

How To: Apply the 7th Law of Exponents

This video explains how to apply the 7th Law of Exponents. The principal rule explained here is that "To raise a quotient to a power, You can multiply each of its terms by the same power". This is a simple rule explained clearly with the help of a couple of examples, which is so simple that once you watch this video you will never make any mistake as far as the 7th Law of Exponents is concerned. It has also got a couple of more parts, do visit them and learn more.

How To: Apply the 2nd Law of Exponents

Having trouble dividing exponents? Doug Simms from Free Math Tutoring provides an excellent tutorial on applying the 2nd Law of Exponents. If you need to know how to divide polynomials, watch this video covering easy to follow examples explaining and demonstrating the 2nd Law of Exponents. In this first part of a two video series, Doug's student explains how to subtract the exponents within a polynomial in a simple example that will help you leap over this common math homework hurdle.

How To: Use Hess's law in physical chemistry

In this free video science lesson from Internet pedagogical superstar Salman Khan, we learn how to use Hess's law. Whether you need help studying for that next big test or could just use a hand finishing your homework, you're sure to be well served by this video lesson. For more information, including detailed, step-by-step instructions, take a look.

How To: Apply the 6th Law of Exponents

This is a video tutorial in the Education category where you are going to learn how to apply the 6th Law of Exponents. The 6th law of exponents says, to raise a product to a power, you can multiply each of its factors by the same power. For example if you have (acm) to the power x, that will be equal to the product of (a to the power x), (c to the power x) and (m to the power x). How is this done? (acm) to the power x is same as (a to the 1, c to the 1 and m to the 1). What we are doing is, w...

How To: Understand the basics of exponent laws

Before you can effectively use exponents, it is necessary to understand the laws behind them. First, in order to multiply a number raised to an exponent, by that number raised to another exponent, just add the exponents: for example, 2^5 * 2^2 is 2^(5+2), or 2^7. In short, a^m * a^n = a^(m+n). Similarly, dividing a number raised to an exponent by that number raised to another exponent can be done by subtracting the exponents: a^m / a^n = a^(m-n). To raise a number raised by an exponent to ano...

How To: Understand Newton's second law

In this tutorial the author explains the concept of Newton's Second Law of motion which states that force is equal to mass times acceleration. So the equation to compute force F is F = m * a, where m is the mass of the body and a is the acceleration produced by the force on that body. He explains that even our weight is our mass times the gravity. So now he explains that mass of a body is constant and only our weight changes depending up on the situation we are in. If you want a clear underst...

How To: Keep Law Enforcement Out of Your Android Device

With protests springing up across America, there's a chance you may have your first interaction with law enforcement. Many demonstrators will have their phones in-hand to film the action, which, sadly, could prompt an officer to demand the device and any self-incriminating data it may contain. Before this happens, you should know there are tools at your disposal to protect your data in such situations.

How To: Here's How You Can Make a Real Difference in the Aftermath of the Michael Brown & Eric Garner Grand Jury Decisions

In the aftermath of the unindicted police killings of Michael Brown and Eric Garner, we've been told that the system worked as intended. When our legal system's outcome is at conflict with what a majority of Americans believe is just, it's clear that some changes are needed. But what specifically needs to change? And what can an average citizen with a moral and just cause do to prevent these kinds of tragedies from repeating themselves again and again?

How To: Write a legal business case study

Law and business are frequently connected more closely than many are comfortable with. Thus, writing business case studies is a big part of legal life in law school and when working at a firm. Watch this video to learn how to write a great business case study.

How To: Draw a room with stairways using complex levels

Have you ever secretly pined away for a career in interior design, even though you're currently stuck in law school because, well, your parents forced you and gave you no other option? Because law school can be a bit rigid in terms of what you learn (pretty much it's just facts and figures and learning sound logic), it's important to indulge your creative side ever once in a while.

How To: Make magnets float down a steel tube

Mr.G in the episode 3 of "Summer snow fall" explain the experiment for eddy currents and lenz law by using general house hold items like copper tubes of different dia., 2-neo themium magnets attached together and a ball bearing magnet. At first he took the big diameter copper tube and drop the neo-themium magnets, they fall slowly without touching the surface of the copper tube as they are like freely falling from space with less gravity, for the next time he took small diameter copper tube a...

How To: Use the law of cosines in trigonometry

Want to solve for a side of a triangle when 2 sides and an angle are known? Learn how with this free video trig 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). With this installment from Internet pedagogical superstar Salman Khan's series of free m...

How To: Experiment the law of inertia

Newtons proposed the concept of inertia. According to him an object at rest tends to stay at test and an object in motion tends to continue in motions unless acted up on by an external force. This is the principle of inertia. The tendency of the body to continue to stay as it was is called its inertia. You can demonstrate this principle with a simple experiment. As shown in the video when the hoop is pulled out the pen cap falls in to the bottle. Here the hoop is acted upon but the cap is not...

Hacking macOS: How to Use One Tclsh Command to Bypass Antivirus Protections

Using Netcat to backdoor a macOS device has its short-comings. If the compromised Mac goes to sleep, the Netcat background process will occasionally fail to terminate correctly; This leaves Netcat running infinitely in the background and the attacker with no new way into the device. As an alternative, we'll use the lesser-known Tcl shell which can handle abrupt backdoor disconnections.

News: What Is a White Hat Hacker?

In recent weeks, some people have been shunned from the Null Byte community because they expressed "black hat" aspirations. This is because Null Byte is the "white hat" hacker training/playground. Although most of us think we know what that means, it does beg the question; "Who and what is a white hat hacker?"

How To: Understand deductive reasoning

In this video, Robert Ahdoot becomes "surfer dude" and shows us the ways of deductive reasoning, as relating to geometry. He begins with a simple example of a syllogism, taking two premises and using them to form a conclusion. This is called the Law of Syllogism. This concept is then used for geometric statements. If two angles are complementary, they sum to 90 degrees. If two angles sum to 90 degrees, then they are acute. By the law taught, it can be said that if two angles are complementary...

How To: Ride a bike in traffic

This video is a tutorial on how to ride a bike in traffic. The first rule is to obey the law. You would need to follow the laws of traffic as though you were driving a car. If there is a bike lane, use it. It is not a good idea to use the sidewalk as that is reserved for walkers and runners. Ride predictably by signaling your turns. The video tells the viewer which side of the road to ride on, and also provides tips. He also discusses how to ride with another cyclist. This is a very informati...