Functions allow you to repeat particular actions without having re-code them for every instance. This tutorial shows you how to set up and use your own functions when you're writing a program using Python. Make sure all your functions are well defined before you start using them!
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...
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...
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...
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...
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...
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:
This video tutorial is an introduction to some of the basic functions of batch files. Part 1 of 2 - How to Use batch files for various 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.
Watch this video to learn how to use function definitions in C++. The topics of declaration order and calling/returning are also covered.
What does f(x) mean? What does g(4) mean? We explore this and more in this 3-part series, "Understanding Math Functions."
The BlackBerry Bold is a nifty new PDA, with a lot of hidden functionality. This tutorial shows you how you can use keyboard shortcuts to navigate, in addition to using applications, managing your contacts and customizing the appearance of your screen.
Learn how to use trigonometric functions to calculate the sides of a right triangle. 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 ...
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 36th installment in his "Highline Excel Class" series of free video Excel lessons, you'll learn most everything there is to know about working with array formulas in Microsoft Excel.
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 31st installment in his "Highline Excel Class" series of free video Excel lessons, you'll learn how to build frequency tables and simple histogram charts in Microsoft Excel. Specifically, this video addresses the following subjects:
This video shows the method to use differential equations to represent growth. Consider the function y=multiple of C & e raised to kx or Ce^(kx). Differentiating it with respect to x, we get dy/dx=kCe^(kx) or ky. So, the solution of the differential equation dy/dx=ky is Ce^(kx). There are two possibilities in the function y=e^(kx). It can be exponentially growth or decay function. This depends on the value of k. If k is greater than 0 or k>0, we get an exponential growth function. On the othe...
New to 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 Excel tutorial from ExcelIsFun, the 234th installment in their series of digital spreadsheet magic tricks, you'll learn how to convert between degrees and radians in Excel with trigonometric functions and formulas. Rad!
New to Excel? Looking for a tip? How about a tip so mind-blowingly advanced as to qualify as a magic trick? You're in luck. In this Excel tutorial from ExcelIsFun, the 315th installment in their series of digital spreadsheet magic tricks, you'll learn how (and when) to use the SUMIF & SUMPRODUCT functions.
This test can be used to determine whether the given graph is a function or not.
This tutorial aimed at someone new to Microsoft Excel shows you how to navigate the basic functions of a spreadsheet. It goes over formulas, functions, formula inputs and cell references, all of which you'll need to master in order to use Excel effectively.
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 about how the new Excel 2010 AGGREGATE function that can calculate these 19 different functions depending on what number you put into the 1st argument of the AGGREGATE function. This is an improvement over the SUBTOTAL function wh...
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 607th installment in their series of digital spreadsheet magic tricks, you'll learn how to match three lists using 2 VLOOKUP functions and the AND function.
Looking for a primer on how to create and work with array formulas in Microsoft Office Excel? You've come to the right place. In this free video tutorial from everyone's favorite MS Excel guru, YouTube's ExcelIsFun, the 12th installment in his series of Excel array formula series, you'll learn how to use the array function MMULT to multiply multiple matrices in matrix algebra. (NB: This is an array function that requires the Ctrl + Shift + Enter trick.)
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 239th installment in their series of digital spreadsheet magic tricks, you'll learn how to create a chart for a linear function of X in Excel as well as how to use a text formula to display a function of X.
If you're interested in learning how all of the defensive moves and attributes function in Fight Night Champion, take a look at this video that provides information the defensive functions of the game. If you're enjoying it on the Xbox 360, you'll be able to learn what buttons allow you to block and play defensively.
A function or signal generator is an electronic device that can create different types of waves and send them through a circuit without building oscillators. This video will teach you how they work and how to build a basic LED dimmer that uses one as an example.
The Canon 60D is a very popular, powerful, and cheap camera for those looking to get into high-end digital photography. If you've got one and need some help on using it's many functions, check out this video for a tutorial on the many buttons and tools in your camera.
Learn how to make time-based calculations with the TODAY and NOW functions in MS Excel 2010. Whether you're new to Microsoft's popular digital spreadsheet application or a seasoned business professional just looking to better acquaint yourself with the Excel 2010 workflow, you're sure to be well served by this video tutorial. For more information, including step-by-step instructions, take a look.
Looking for a primer on how to use the DATEDIF function in MS Excel 2007? You're in luck. Whether you're new to Microsoft's popular digital spreadsheet application or a seasoned business professional just looking to better acquaint yourself with the Excel 2007 workflow, you're sure to be well served by this video tutorial. For more information, including step-by-step instructions, take a look.
Need an introduction to Excel's useful TODAY & NOW time functions? You're in luck as this clip provides just that. Whether you're new to Microsoft's popular digital spreadsheet application or a seasoned business professional just looking to better acquaint yourself with the Excel 2007 workflow, you're sure to be well served by this video tutorial. For more information, including step-by-step instructions, take a look.
The Canon EOS 7D can be fine-tuned to adjust its auto focus to suit nearly any subject. See how you can customize your AF functions to get the best focusing options needed for your desired result. This video breaks down everything.
Looking for a primer on how to create and work with names in Microsoft Office Excel? You've come to the right place. In this free video tutorial from everyone's favorite MS Excel guru, YouTube's ExcelIsFun, the 1st installment in his series of Excel name tricks, you'll learn to use names in formulas and functions as well as how to edit them. See how to name a cell or range of cells with this free video lesson.
Love Microsoft Excel? This clip contains a tip that just might induce you to. With this free video tutorial from ExcelIsFun, the 98th installment of his "YouTubers Love Excel" or YTLE series of free video MS Excel lessons, you'll learn how to use the ADDRESS function to make labels in templates easier for users to understand.
In this tutorial, we learn how to determine if you have a function. You will start off with two functions and their points. The 'x' values make up the domain of the function and the 'y' values make up the range. The input values are the domain and the output are the range. If you're checking to see if you have a function, you will need one 'y' for every 'x'. This means that each value has another one that goes with it. Each of the points need to have one partner with them, no more and no less...
Probability computation is a complex process and even using a calculator can be difficult. But normal probability calculations can be performed quickly with the help of calculator once you know how to use it. So when you have to calculate a probability from a normal distribution you can use the functions on your scientific calculator. You can use the normal CDF function from you calculator to compute the area under a normal curve. The function requires lower band and upper band values, the me...
This six-minute tutorial shows you how to use the logical IF function with letter grades in Excel. The video features a sample table with a sample assigned grading scheme ranging from A to F, which is a common application of the logical IF statement in Excel. After the data is added to your Excel table, use the IF function in the respective cell or column by inputting the logical test, the value if the test is true, and the value if the test is false. In addition to showing you how to use the...
This video deals with solving quadratic functions. It does not involve the use of the quadratic equation; rather, only factored equations are used. The speaker starts out with a factored quadratic equation. The speaker goes on to do the mathematical steps necessary to find both the x and y intercepts of the quadratic function at hand. The author then continues on with the example to find the function's minimum. Next all of the points that have been solved for are plotted and the function is s...
YAYMATH In order to use rational functions in intermediate algebra, Robert Ahdoot begins by setting values to the functions f(x) and g(x). He then adds these functions together, with the equation (f+g)(x). After addition comes subtraction, using the equation (f-g)(x). And finally multiplication, which is (ftimesg)(x). This is a little more complicated, requiring distribution of a binomial across a polynomial, but it's clearly demonstrated and explained. This video explains what to do with add...
In this video tutorial, viewers will learn how to create a table for the VLOOKUP function in Excel. Create a dynamic table for the VLOOKUP function as well as a dynamic lookup area so that as you add new data or columns to the Lookup table. Create dynamic ranges using the Excel Table feature and Table Formula Nomenclature for the Data Validation drop-down list, the VLOOKUP table and the MATCH table. See an IF function formula that creates new labels as new columns are added to the lookup tabl...
JustMathTutoring This video shows the procedure of finding derivatives using the Chain Rule. The Chain Rule states that the derivative of a composition of functions is the derivative of the outside function evaluated at the inside multiplied by the derivative of the inside. This can be stated as if h(x) = f[g(x)] then h'(x)=f'[g(x)]g'(x). This is explained by two examples. In the first example we find the derivative of the sine of square of 'x'. We take the derivative of sine at square of 'x'...
