This video revolves around solving rational equations in Algebra 2. When you are given a rational equation, you have to find the greatest common factor and multiply all fractions to get that common factor. If a fraction already has that common factor, then no further step is necessary for that one. Next, you have to multiply all fractions by the greatest common factor to get rid of all denominators. Finally, the remaining equation is simple math and you only need to solve the equation for the...
In this video tutorial, viewers learn how to simplify expressions involving algebraic ratios. In some ways, simplifying algebraic radicals is easier than numeric radicals. When we are working with square roots, we need to find the highest even power of a variable to act as out perfect square. When working with cube roots, we look for the highest multiple of 3 as an exponent for our perfect square. This video is very descriptive and clearly explains all the functions of the formula. This video...
In this video tutorial the instructor shows how to solve exponential and logarithmic equations. Solving exponential equations can become very difficult if it involves large numbers. To solve these kinds of complex equations you need to get all the numbers to the same base number. The base number raised to some number should give you your original number. Now if you write the numbers as exponents of your base number you can directly equate the exponent part and solve for the missing variable. ...
In this video the instructor shows how to factor a general quadratic polynomial. Here the first step is to identify the coefficient of the squared term. Write the reciprocal of the numerical coefficient of the squared term out side and write two separate parenthesis which are going to contain the binomials which are the factors of the original equation. The first term of both the binomials is the first term numerical coefficient times the unknown variable. Now multiply the first term numerica...
In this video the instructor shows how to factor a polynomial. A polynomial having three terms is called as trinomial. Now if you factor it you will obtain two binomials whose product will be the original polynomial. Before factoring a polynomial you need to find out if the polynomial has a GCF. Look out for the common variables in all the three terms and pull them out which is the GCF of the polynomial. This simplifies the original equation to a polynomial which is of lower degree. Now facto...
An educational video by http://JustMathTutoring.com that shows how to use implicit differentiation to find a 2nd derivative of an equation.
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...
You Tube User robichaudd teaches you how to simplify a complex fraction with 3 fractions top and bottom. Your result should be 1 fraction over 1 fraction. To do this you must find the L.C.D. at the top, which x cubed. That is the largest variable there. Thus, the L.C.D. at the bottom is x squared. Now you want to make each x below the fraction line be x cubed, respectively x squared. You then have one large fraction over one large fraction. But that is just one large fraction multiplied by th...
If you are given an equation of ellipse in the form of a function whose value is a square root, you may need to simplify it to make it look like the equation of an ellipse. Now equate the function to a variable y and perform squaring on both sides to remove the radical. Now simplify the equation and get it in the form of (x*x)/(a*a) + (y*y)/(b*b) = 1 which is the general form of an ellipse. Now you will have the x and y intercepts which are a and b respectively. Using this values graph the eq...
This video will demonstrate exactly how to shift a graph on a x,y axis. When shifting a graph on the x axis you will need to replace x with x-h; where h is the variable to shift the graph. No matter how far you need to shift a graph, h is always the number of units you are shifting; shifting up or right is represented as a positive and down or left is negative. Just plug in your units into your equation and you will have your shifted graph.
This video demonstrates how to solve a linear function with rational coefficients by multiplying by the reciprocal of the coefficient. The reciprocal is just a fancy way of saying the numerator and denominator are swapped. Two sample problems are solved using this method. Multiplying each side of the equation by the reciprocal of the rational coefficient of the variable 'x' is an allowed operation, but only because both sides are multiplies by the the same amount. The teacher then demonstrate...
The video describes the basic process of multiplying two rational expressions. The problem illustrated in this video involved multiplying rational expressions of monomial terms with integer coefficients. As with the other example problems, we follow the steps of: factoring, canceling, and multiplying. Because these terms are monomials, no factoring is required (but we still state it as a step for similarity to solving other problems). We then find the greatest common divisor for both terms to...
In this tutorial the instructor shows how to complete the square to graph a quadratic function using transformations. You can do this by transforming your equation in a series of steps. First make the coefficient of the square term to one by pulling out its numerical coefficient. Now to complete the square of the first part add half the coefficient of the variable with a degree one. Now to maintain the original value of the equation also make sure that you subtract the same value from the equ...
In this tutorial the instructor shows how to factor a trinomial with Greatest Common Factor (GCF) and then how to group it. The first thing you have to do when you want to factor a trinomial is look for the GCF. First factor the numerical coefficients of the terms of the equation. Now separate out the common numerical factor and if any common variable. This leaves you with a binomial to be factored. Now to solve this multiply the numerical coefficients of the first term and the last term and ...
In this video, you will learn how to factor a simple trinomial. You will learn how to recognize a simple trinomial, and how to completely factor the trinomial. Also, it shows you how to factor square variables. The last example in the video explains how to factor out a negative first term. You can't just drop the negative and forget it is there. The instructor teaches you how to remove this negative, then reminds you not to forget to put the negative into your final answer.
In this installment of the Excel Basics Series you'll learn how to use formulas to calculate an annual interest rate, as well as breaking it down to a monthly rate and an effective annual rate. A general knowledge of Excel is helpful for navigating the menus in Excel, but if you pay attention during this presentation you'll pick up the skills quickly! Several ideas covered in this video are Formulas with cell references, how to find various Excel functions to use in formulas, and the Effect f...
How to Use the Highest Common Factor method for Factoring
MySQL is a database for serving data on the web. This video teaches viewers how to connect to a database and add data in PHP & MySQL. PHPMyAdmin is an interface that allows you to interact with MySQL more easily. Use the form in the program to create a database; choose the name for your database and select 'create'. Next you can create tables within your database, also using the forms provided. Within the tables you can set your variables; PHPMyAdmin has fields that allow you to choose the ty...
In this tutorial the instructor shows how to derive a straight line equation. He shows us a process that consists of two steps. In step one he uses the slope formula to obtain the slope of the line which is the ratio of difference of y-coordinates and difference of x-coordinates. Now in the step two he uses the slope he obtained in the first step and equates it two a another slope derivation which uses a generic x, y variables and a real point. Now solving this equation he arrives at the equa...
A video from free math tutoring that teaches you a method of factorization of a complex polynomial. The tutor shown in the video demonstrates how to factorize common functions of a variable by the factor method. This video isn't for advanced learners of mathematics. It is for beginner to intermediate level viewers.
In this video the instructor shows how to find the slope of an equation which is in the form Ax + By + C = 0. He says that the formula to find the slope of a line in the above form is slope m = -A/B, where A and B are the numeric constants of the variables x and y in the given equation. He goes on and further shows how to do this with a couple of examples. He shows how to reduce any equation into the general form and how to apply the slope formula then. This video shows how to find the slope ...
Central limit theorum is easily one of the most fundamental and profound concepts in statistics and perhaps in mathematics as a whole. In probability theory, the central limit theorum (CLT) states conditions under which the mean of a suffiently large number of independent random large variables (each with finite means and variance) will be normally distributed, approximately. Huh? If you are having trouble understanding central limit theorum and need help trying to solve it, check out this tu...
This movie shows you how to easily change screen resolution and the refresh rate in Windows 7. The first thing you have to do is to right-click anywhere on the desktop and then click the 'Screen Resolution' item. If you have multiple displays, select the display which resolution you want to change from the pop-up menu in the 'Display' field. Next, select the preferred resolution from the pop-up menu in the 'Resolution' field. To change your display refresh rate, you have to click the 'Advance...
This video teaches "How to solve Formula Problems". You will be given numbers to replace all letters in the formula EXCEPT one.
Utilizing X-Rated Fusion, this drink brings many flavors to the table, most through the alcohol itself. With a bit of Peach Schnapps and pineapple juice, the only thing to make this drink complete is a bit of 7UP to lighten the mood.
This how-to video shows the steps for making chain mail, just like the authentic armor of the Medieval period. Making chain mail is fairly simple, requiring only a couple supplies. You will need a rod, wire cutters, two pairs of pliers, a variable speed drill, and a spool of un-galvanized fencing wire. Watch this video metalwork tutorial series and learn how to make chain mail.
Ever wanted to become a programmer? This Delphi Training Series: Programming 101 is a sequence of training videos designed to teach the complete beginner how to become a programmer using Delphi.
Export your video to share on Vimeo with iMovie. This video shows the different steps involved in exporting video, including setting the video width & height, bit rate, frame rate, audio settings, and saving to a file ready for upload.
Export your video to share on Vimeo with Windows Live Movie Maker. This video shows the different steps involved in exporting video, including setting the video width & height, bit rate, frame rate, audio settings, and saving to a WMV file ready for upload.
High finance and statistical analysis are too complex for most people once they forget what they learned in high school. If you are an investor or small business owner, you can't afford to forget this stuff. This video will teach you how to value an interest rate swap, good info for financial professionals and students.
Looking for an easy way to solve rate-of-change problems? Use the chain rule! 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 calcula...
Need to know how to use derivatives to solve rate-of-change problems? Find out. 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 solve...
This image editing software tutorial shows you how to use Dr. Brown's Interpret Video & Fit Video to Audio script for Photoshop CS3. Change the frame rate of video files with these easy to use scripts. These scripts will only work with Photoshop CS3 Extended.
One of the standout features of the OnePlus 7 Pro is the 90 Hz display. A higher refresh rate means smoother gameplay for all your favorite games, which is precisely what you'd want out of your gaming experience. However, not all games play nicely with these higher refresh rates — but luckily, there's a pretty simple fix.
Your Apple Watch sends you notifications from friends, family, and the apps that are important to you. Occasionally, however, the watch may scare the heck out of you with a notification warning of an abnormal, elevated heart rate. If you have no history of heart conditions, this alert might come as a shock. Why do you have a high heart rate, and what are you to do with the information?
As you might guess, one of the domains in which Microsoft Excel really excels is business math. Brush up on the stuff for your next or current job with this how-to. In this tutorial from everyone's favorite digital spreadsheet guru, YouTube's ExcelIsFun, the 39th installment in his "Excel Business Math" series of free video lessons, you'll learn how to calculate (piecework/comission) incentive rates by Excel formula.
As you might guess, one of the domains in which Microsoft Excel really excels is business math. Brush up on the stuff for your next or current job with this how-to. In this tutorial from everyone's favorite digital spreadsheet guru, YouTube's ExcelIsFun, the 28th installment in his "Excel Business Math" series of free video lessons, you'll learn how to solve for rate in percent formula.
As you might guess, one of the domains in which Microsoft Excel really excels is business math. Brush up on the stuff for your next or current job with this how-to. In this tutorial from everyone's favorite digital spreadsheet guru, YouTube's ExcelIsFun, the 30th installment in his "Excel Business Math" series of free video lessons, you'll learn how to solve business math word problems that involve rate of change (increase or decrease).
As you might guess, one of the domains in which Microsoft Excel really excels is business math. Brush up on the stuff for your next or current job with this how-to. In this tutorial from everyone's favorite digital spreadsheet guru, YouTube's ExcelIsFun, the 32nd installment in his "Excel Business Math" series of free video lessons, you'll learn how to solve increase and decrease (Rate and Percentage) applied business math word problems.
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 calculate the US unemployment rate given the raw data.
