Functioning Efficiently Search Results

How To: Help your RV water heater run more efficiently

RV water heaters can be easily made more efficient by loosening one or two screws that hold the U-tube tight. Sometimes the orifice that connects the gas valve and the U-tube is not aligned properly with the U-tube, and the loosening of one screw or the other will allow the straight alignment of the orifice and U-tube. After loosening the screws and realigning the U-tube, simply tighten the screw and the water heater will be more efficient because the perfect gas and air mixture will be present.

How To: Conserve water indoors

W.H. Auden wrote, “Thousands have lived without love, not one without water.” Indeed, the average American home uses 140 to 170 gallons of water every day. Cut that in half with some water-saving tips.

How To: Carve a spoon with a hook knife

Understanding how a knife most likes to cut wood is key to doing any woodcarving. In this video tutorial, a pair of disembodied hands will demonstrate, step by step, a method for efficiently carving out the bowl of a spoon with a hook knife. (Said hands use a blank of basswood for expediency; birch is normally used for eating spoons.) To learn more about carving with a hook knife, watch this folksy how-to.

How To: Disassemble, clean, & assemble a Samson juicer

Check out this three-part appliance video tutorial to learn how to disassemble, clean, and assemble your Samson juicer. Just follow the simple instructions and learn the proper techniques for disassembling. Then learn how to efficiently clean the fragile and sharp components of your Samson juicer. Finally, reassemble your juicer, and you're ready to make more delicious drinks.

How To: Disassemble a 13" MacBook computer

Accidents will happen. This two-part video tutorial will guide you through the process of taking apart your 13" MacBook quickly and efficiently without damaging any of the components, the first necessary step of any successful repair. This tutorial will also be of use to those who wish to learn more about the guts of their MacBooks without actually disassembling their units. Replace your own display with this video tutorial.

How To: Reverse Shell Using Python

Hi Folks. This is my first post. I will teach how to create a server and client python reverse shell using sockets and python language. The script i'll post here is going to be very simple, and from here you'll have the possibility to adapt to your own purpose. For example, my original script can download files, upload files, make changes to registry, create user accounts and more. I'm sure you could do it on your own too.

How To: Replace the brushes in a corded DeWalt power drill

Removing and replacing the brushes in your DeWalt power drill doesn't have to be a costly repair. You can do it yourself, and it doesn't require a lot of time or effort. Simply unscrew and take the casing off your corded DeWalt power drill to expose the brushes. The model in the video has spring-loaded brush holders. It's as simple as taking the old ones out, and dropping the new brushes in. Learn from a pro to efficiently and correctly restore the brushes in your corded drill.

How To: Speed up Windows XP and Vista boot performance

In this tutorial, we learn how to speed up Widows XP and Vista using boot performance. Disabling programs in the background you don't need will really increase the speed of your computer. To turn the programs off, click "start", then "run", then "msconfig", and press "ok". A new window will appear, choose "startup". You will see check marks next to programs that start when you turn on your computer. Click the check marks next to the boxes to disable or enable the programs you want to run when...

How To: Pack a backpack for wilderness hiking

This video gives you tips on how to pack your backpack for wilderness hiking. A standard backpack will do just fine. As for the gear, there are a few essential items that you must pack, such as a sleeping bag and a ziploc bag to keep your clothes dry and bowls and spoons. You can combine a spoon and a fork and use a spork for the best combination. Other things such as measuring cups are also useful. Toilet paper is very handy, and pots and pans are essential for cooking things you catch. Othe...

How To: Solve problems with inverse functions

In this video the instructor teaches about inverse functions. Normally in inverse functions problems you are given a function that has a set of points and you are asked to find the inverse of that function. So if the function has a point in the form (x, y) then the inverse function has its points in the form of (y, x). Now when you are given a function f(x) that is in the form of x and asked to find its inverse, equate the function to y. Solve the equation to get the value of variable x in th...

How To: Graph piecewise defined functions

In this video the instructor shows how to graph a piecewise defined function. A piecewise defined function is a function that is defined in separate pieces. In these kind of functions, for different ranges of the value of x, you are given different small functions, all of which together make the whole function. This means your equation of the function is given in the form of smaller functions. Now to graph these kind of equations all you have to do is graph the individual equations in the sam...

How To: Create simple functions when programming in Python 3

In this clip, you'll learn how to create and call simple functions when coding in Python 3. Whether you're new to the Python Software Foundation's popular general purpose programming language or a seasoned developer looking to better acquaint yourself with the new features and functions of Python 3.0, you're sure to benefit from this free video programming lesson. For more information, including detailed, step-by-step instructions, watch this video guide.

How To: Ignore nested subtotals with AGGREGATE 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 664th installment in their series of digital spreadsheet magic tricks, you'll learn how to make a calculation on a column of values that contain subtotals that you do not want to include in the calculations. The AGGREGATE function will ignore nested SUBTOTAL and AGGREGATE functions when making calculations.

How To: Use the AGGREGATE function in Microsoft Excel 2010

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 669th installment in their series of digital spreadsheet magic tricks, you'll learn how to use the AGGREGATE function in Microsoft Excel 2010 and later. This new function is better than SUBTOTAL function because 1) the options argument set to 18 will calculate Percentile and 2) AGGREGATE can handle arrays. See how th...

How To: Apply quadratic functions 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 (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 that require you to apply quadratic functions in algebra.

How To: Graph and solve quadratic functions 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 (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 find answers to quadratic function problems in intermediate algebra by graphing.

How To: Find the inverse of a function in algebra

Need a little help figuring out how to find the inverse of a function in algebra? 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 ever to follow in their footsteps (or just finish your homework or study for that next big test). With this free math tutorial, you'll learn how to calculate the inverse of a given algebraic fun...

How To: Solve problems involving functions in algebra

Need to know how to solve function problems 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 (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 work with and solve functions.

How To: Use functioning & static dominant chords in jazz guitar

In this video, we learn how to play Jazz guitar: Functioning & Static Dominant Chords. When you play an A7 going to a D chord, you are playing a functioning dominant, because a five chord always wants to go to a one chord. This is because of the tension in the five chord and how it resolves to the one chord. You will hear that the chord wants to go to a different chord, so make sure you understand this concept as you are playing. If the chord does go to the other, it's referred to as a functi...

How To: Use the SUMIF function with an array in Microsoft 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 694th installment in their series of digital spreadsheet magic tricks, you'll learn how the SUMIF function (and COUNTIF, etc.) cannot accept arrays. If you need to sum by year from transactional data the SUMIF and YEAR functions cannot be used together. Instead we can use the SUMPRODUCT function.

How To: Use Excel's SUMIF, RANK & IF functions

Whether you're interested in learning Microsoft Excel from the bottom up or just looking to pick up a few tips and tricks, you've come to the right place. In this tutorial from everyone's favorite digital spreadsheet guru, ExcelIsFun, the 30th installment in his "Highline Excel Class" series of free video Excel lessons, you'll learn how to use the SUMIF function to add with one criteria, the RANK function to rank highest values to lowest values (one to five) and the IF function to assign a bo...

How To: Work with exponential growth functions in mathematics

Exponential functions are functions which contains terms which are integers raised to the power of variables. Note that the variables are not raised to the power of integers, but the integers are raised to the power of variables. Variables raised to the power of integers are called as polynomials and are a different class of functions. But exponential functions grow very fast than polynomials with the increase in the value of the variable. To understand the growth of these functions take a si...

How To: Sketch the graph of a piecewise function

This video teaches us to draw the graph of a piecewise function. This is shown using two examples. In the first example we have 'y' equal to 'x + 2' for x less than zero and '1 - x' for x greater than equal to zero. We plot two points on the function for x less than zero and do the same for the function with x greater than equal to zero. The graph for the first function is erased for x greater than equal to zero, and the same is done for the second function for x less than zero. Note that the...

How To: Graph the absolute value of a function

This video shows the method to plot the graph of the absolute value of a function. The video shows the example of the function of cube root of 'x'. The demonstrator first plots the graph of a cube root function. This is done by taking the reference point of positive one and positive eight. The graph is drawn for both negative and positive values of 'x'. After this the graph of absolute function is drawn by taking the absolute value of the cube root function. The resultant graph comes out to b...

How To: Graph the greatest Integer or floor function

The video shows the explanation of greatest integer function. This video explains this with the help of graphs. The video first describes the basic greatest integer function. This means the greatest integer less than or equal to the number gave. The graph of this function is drawn. The video then shows the variations of this function. The first variation shows the function that replaces the 'x' coordinate with it subtracted by three. This shifts the graph to the right by three units. The seco...

How To: Solve mathematical functions and graphs

Check out this instructional math video that demonstrates how to calculate mathematical functions and graphs. In this 9th lesson, learn how to solve on SAT Algebra problems using the Official SAT Study Guide (as always). Here are the math problems and their page numbers that this video covers: