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How To: Plot absolute values on a number line

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 plot absolute values on a number line in simple algebra/geometry.

How To: Find the midpoint of a line segment in geometry

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 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 the midpoint of a line segment in geometry.

How To: Determine whether a pair of lines are parallel

See how to determine whether a set of lines are parallel given their equations with this free video math 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 math tut...

How To: Calculate the slope of a line in algebra

Looking for a guide on how to figure out the slope of a line in basic 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 calcul...

How To: Determine whether a pair of lines are perpendicular

See how to tell whether a set of lines are perpendicular to one another given their equations with this free video math 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 o...

How To: Find the equation representing a given line in algebra

Need to find the equation of a line? See how it's done with this free video algebra lesson. Need help finding the 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 tu...

How To: Graph a line in slope intercept form

Need to graph a line in slope-intercept form (y=mx+b)? See how it's done with this free video math lesson. Need help finding the 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 ...

How To: Find the slope of a line given a graph

Need to calculate how steep a line is? See how it's done with this free video math lesson. Need help finding the 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 tut...

How To: Solve an absolute value equation and graph the answer on a number line

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. With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to solve an absolute value problem in algebra and graph your answer on a number line.

How To: Calculate angles formed between transversals and parallel lines in geometry

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. With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to calculate the value of angles formed between transversals and parallel lines in basic geometry.

How To: Prove that the areas of diagonal-generated triangles are equal in geometry

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. With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to demonstrate that a diagonal line drawn from one corner of a rectangle to another will generate two equivalent triangles.

How To: Build and install a retaining wall with Lowe's

In this installment of home improvement do-it-yourself videos, brought to you by Lowe's, host Mike Kraft, one of Lowe's home improvement experts, demonstrates a landscaping technique that shows you how to create a retaining wall with interlocking wall blocks, that features a raised planter bed. Mike gives you a list of all the tools and materials you will need to create the retaining wall, and offers some tips on creating curved lines when laying out the wall.

How To: Use descending bass lines in C major on guitar

Because of its portability, the acoustic guitar can be wonderful songwriting device. However, having a pocket symphony in your head–or pocket, as it were–does you little good if your hands aren't on board. Fortunately, YouTube user Sawlon is here to help you train your head and hands with his series of free video guitar lessons. In this installment, you'll learn how to play descending bass lines in the key of C major on acoustic guitar. Remember, the more you practice and the more theory you ...

How To: Play walking, or transition, bass lines on guitar

Because of its portability, the acoustic guitar can be wonderful songwriting device. However, having a pocket symphony in your head–or pocket, as it were–does you little good if your hands aren't on board. Fortunately, YouTube user Sawlon is here to help you train your head and hands with his series of free video guitar lessons. In this installment, you'll learn how to play walking bass lines on acoustic guitar. Remember, the more you practice and the more theory you know, the better you'll s...

How To: Create a frequency polygon line chart 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 655th installment in their series of digital spreadsheet magic tricks, you'll learn see how to create a statistical frequency polygon using a line chart. Also see how Excel mistakenly interprets number category label data as Number Series data.

How To: Find the slope of a tangent line to a curve in calc

Learn how to find the first derivative in calculus. 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 the slope of a tangent line ...

How To: Create charts and set up pages for analysis in 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're in the right place. In this tutorial from everyone's favorite digital spreadsheet guru, ExcelIsFun, the 5th installment in his "Highline Excel Class" series of free video Excel lessons, you'll learn how to create seven types of charts — X-Y scatter diagrams, pie charts, column charts, bar charts, stacked bar charts, line charts, and column and line chart combined. ...

How To: Make a frequency polygon with 2 or more lines in Excel

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. With this video tutorial from ExcelIsFun, the 329th installment in their series of digital spreadsheet video tutorials, you'll learn how to create a frequency table. Then see how to calculate the midpoint of each category and make a frequency polygon with two or more lines (two or more data sets).

How To: Create a line chart with time as its x-axis in 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 284th installment in their series of digital spreadsheet magic tricks, you'll learn how to create a line chart from years and percentage change. See how Excel makes the chart wrong, but then see how to fix it.

How To: Force text formulas to wrap with Excel's CHAR 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 228th installment in their series of digital spreadsheet magic tricks, you'll learn how to use the CHAR (10) function to add hard line returns (forced wrapped text) to a text formula created with the ampersand (&) and concatenation tools.

How To: Run a chart lookup with defined names 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 637th installment in their series of digital spreadsheet magic tricks, you'll learn how to create a dynamic two data series line chart for blood pressures — how to look up a chart using defined names, a data validation list, and a formula using the INDIRECT function inside a picture of a chart.

How To: Chart data & use Excel's SUMIFS & AVERAGEIF 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 nth installment in his "Highline Excel Class" series of free video Excel lessons, you'll learn how to create and use simple charts in MS Excel as well as see how to use Excel's SUMIFS & AVERAGEIFS functions. Specifically, this video covers the following topics:

How To: Do multiple regression with MS Excel's LINEST 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 13th installment in his series of Excel array formula series, you'll learn how to do multiple regression and linear algebra problems with Excel's LINEST array function. Also see how to use the SLOPE, INTERCEPT and the FORECAST functions for linear algebra and how to create a s...

How To: Play a simple chromatic jazz riff on electric guitar

To play a guitar riff is to do more than simply to memorize a short musical phrase. Guitar riffs are like any other musical exercise; practicing them can be a terrific means of building manual dexterity and improving your overall playing technique. We can say of riffs, then, that they are not so much about rote repetition as making available to the guitarist new and different ways of playing. Every new riff you learn will make you a more able and versatile guitarist and better equip you to st...

How To: Use alternating bass patterns on acoustic guitar

Because of its portability, the acoustic guitar can be wonderful songwriting device. However, having a pocket symphony in your head–or pocket, as it were–does you little good if your hands aren't on board. Fortunately, YouTube user Sawlon is here to help you train your head and hands with his series of free video guitar lessons. In this installment, you'll learn how to play alternating bass patterns in the key using open G, C, D, and Em chords on acoustic guitar. Remember, the more you practi...

How To: "Find & Replace" Text Directly in Your Web Browser

I'm sure you've been there—halfway through typing something out, you realize that one word you've been using more than any other has been misspelled. Perhaps it's a single word, acronym, or line of code that you find yourself typing quite often at work, but this one requires complicated hand gymnastics that you'd simply rather not perform over and over again.

How To: Add today's date & time via keyboard shortcut in 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 618th installment in their series of digital spreadsheet magic tricks, you'll learn about a handy key command that will allow you to enter both today's time and date into a single Excel cell.

How To: Use names in formulas and functions in Microsoft Excel

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.

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