Lumos Video Store
This page provides a list of educational videos related to Step Functions. You can also use this page to find sample questions, apps, worksheets, lessons , infographics and presentations related to Step Functions.
Finding the Inverse of Log Function Pt I
By charlie Lindelof
Step by step instructions for finding the inverse of a logarithmic function. Then we graph the functions on a calculator to provide graphical proof
Graphing a Logarithmic Function Pt II
By charlie Lindelof
Another brief tutorial on graphing logartihmic functions. This video is step by step instructions
Graphs Of Square Root Functions
By Khan Academy
This Khan Academy video offers more information on graphing square root functions and contains a few sample problems with a step-by-step walkthrough on graphing these functions.
Domain and range of piecewise functions
By Khan Academy
Sal finds the domain and range of a piecewise function that is constant in each segment. Such functions are called step functions.,487
Inverse Relations and Functions
By WOWmath.org
This videos details the steps on how to find the inverse of a function.
Stepping Through Iterative Fibonacci Function - Khan Academy
By Khan Academy
Understanding how the iterative fibonacci function works for a particular example. All Khan Academy content is available for free at www.khanacademy.org
1.8 - Finding the inverse of a rational function with a root as a denominator - coolmath
By Mr. McLogan's Math Channel
In this video tutorial I will show you how to find the inverse of a function f(x). I do this by first writing the equation substituting y for f(x). I then solve the equation for x. The result is the inverse. The inverse can be written, substituting y back in for x, and x for y. I also show how to verify that a function is an inverse of another function. I am a math teacher that provides free online math tutoring by working through problems for the website www.freemathvideos.com These questions are usually to help students understand their math homework or to do well on their math test. The videos are made for students that want help with math and want to be shown a step by step process into solving the problems. In addition to solving the problems I also offer explanations into why I am doing each step. I offer free math videos so that my students can learn math online if they missed a day of school. However I also like to answer questions that are no
1.3 How to determine the domain and range of three graphs - domain and range
By Mr. McLogan's Math Channel
http://www.freemathvideos.com n this math tutorial I describe how to find the domain of a function by determining when the bottom of a rational function is zero and when the root is negative. I also might look at the graph and determine the intervals for the domain of the function. For a rational expression we set the bottom of the rational expression to zero and solve for x. For a function with an even root we set the radicand greater than or equal to zero and solve for x. I show how to solve math problems online during live instruction in class. This is my way of providing free tutoring for the students in my class and for students anywhere in the world. Every video is a short clip that shows exaclty how to solve math problems step by step. The problems are done in real time and in front of a regular classroom. These videos are intended to help you learn how to solve math problems review how to solve a math problems study for a test or finish your homework.I post all of my videos
1.4 Finding the zeros of a function - Zeros of polynomial function
By Mr. McLogan's Math Channel
In this video tutorial I show you how to find the zeros of the function. I do this by plugging in zero for the dependent variable, f(x), and then solving for the independent variable (x) using algebra. The methods I use to solve for x include completing the square, factoring, square root method, and quadratic formula.I show how to solve math problems online during a live classroom. This is my way of providing free tutoring for the students in my class and for students anywhere in the world. Every video is a short clip that shows exaclty how to solve math problems step by step. The problems are done in real time and in front of a regular classroom.
Writing Equations of Exponential Functions
By drmikedcook
Writing Equations of Exponential Functions
Writing Equations of Exponential Functions
By drmikedcook
Writing Equations of Exponential Functions
Negative Exponents | MathHelp.com
By MathHelp.com
In this example, we’re given the functions f(x) = 3x – 2 (read as “f of x equals…”) and g(x) = root x, and we’re asked to find the composite functions f(g(9)) (read as “f of g of 9”) and g(f(9). To find f(g(9)), we first find g(9). Since g(x) = root x, we can find g(9) by substituting a 9 in for the x in the function, to get g(9) = root 9, and the square root of 9 is 3, so g(9) = 3. Now, since g(9) = 3, f(g(9)) is the same thing as f(3), so our next step is to find f(3). And remember that f(x) = 3x – 2, so to find f(3), we substitute a 3 in for the x in the function, and we have f(3) = 3 times 3 minus 2. Notice that I always use parentheses when substituting a value into a function, in this case 3. Finally, 3 times 3 minus 2 simplifies to 9 minus 2, or 7, so f(3) = 7. Therefore, f(g(9)) = 7. Next, to find g(f(9), we first find f(9). Since f(x) = 3x - 2, we find f(9) by substituting a 9 in for the x in the function, to get f(9) = 3 times 9 minus 2, which simplifies to 27 – 2, or 25, so f(9) = 25. Now, since f(9) = 25, g(f(9)) is the same thing as g(25), so our next step is to find g(25). And remember that g(x) = root x, so to find g(25), we substitute a 25 in for the x in the function, to get g(25) = root 25. Finally, the square root of 25 is 5, so g(25) = 5. Therefore, g(f(9)) = 5. It’s important to recognize that
Comparing linear functions word problems
By Khan Academy
Sal is given a table of values that represents a person walking to work, and is asked to determine which verbal description represents someone starting at the same distance from work.
Comparing linear functions word problems
By Khan Academy
Sal is given a table of values that represents four people walking to school, and is asked to determine which one started out farther from the school.
Comparing linear functions word problems
By Khan Academy
Sal is given the formula and a table of values that represent two people climbing a wall, and is asked to determine which one started out higher.
1.8 Finding the inverse of a function- Free Online Tutoring
By Mr. McLogan's Math Channel
In this video tutorial I will show you how to find the inverse of a function f(x). I do this by first writing the equation substituting y for f(x). I then solve the equation for x. The result is the inverse. The inverse can be written, substituting y back in for x, and x for y. I also show how to verify that a function is an inverse of another function. I show how to solve math problems online during live instruction in class. This is my way of providing free tutoring for the students in my class and for students anywhere in the world. Every video is a short clip that shows exaclty how to solve math problems step by step. The problems are done in real time and in front of a regular classroom. These videos are intended to help you learn how to solve math problems, review how to solve a math problems, study for a test, or finish your homework.I post all of my videos on youtube but if you are looking for other ways to interact with me and my videos you c
1.8 Overview of inverses
By Mr. McLogan's Math Channel
In this video tutorial I will show you how to find the inverse of a function f(x). I do this by first writing the equation substituting y for f(x). I then solve the equation for x. The result is the inverse. The inverse can be written, substituting y back in for x, and x for y. I also show how to verify that a function is an inverse of another function. I show how to solve math problems online during live instruction in class. This is my way of providing free tutoring for the students in my class and for students anywhere in the world. Every video is a short clip that shows exaclty how to solve math problems step by step. The problems are done in real time and in front of a regular classroom. These videos are intended to help you learn how to solve math problems, review how to solve a math problems, study for a test, or finish your homework.I post all of my videos on youtube but if you are looking for other ways to interact with me and my videos you
1.8 How to find the inverse of a cubic root function - Online Tutor - Free Math Videos
By Mr. McLogan's Math Channel
In this video tutorial I will show you how to find the inverse of a function f(x). I do this by first writing the equation substituting y for f(x). I then solve the equation for x. The result is the inverse. The inverse can be written, substituting y back in for x, and x for y. I also show how to verify that a function is an inverse of another function. I show how to solve math problems online during live instruction in class. This is my way of providing free tutoring for the students in my class and for students anywhere in the world. Every video is a short clip that shows exaclty how to solve math problems step by step. The problems are done in real time and in front of a regular classroom. These videos are intended to help you learn how to solve math problems, review how to solve a math problems, study for a test, or finish your homework.I post all of my videos on youtube but if you are looking for other ways to interact with me and my videos you
1.8 How to find the inverse of a rational function - Free Math Videos
By Mr. McLogan's Math Channel
In this video tutorial I will show you how to find the inverse of a function f(x). I do this by first writing the equation substituting y for f(x). I then solve the equation for x. The result is the inverse. The inverse can be written, substituting y back in for x, and x for y. I also show how to verify that a function is an inverse of another function. I show how to solve math problems online during live instruction in class. This is my way of providing free tutoring for the students in my class and for students anywhere in the world. Every video is a short clip that shows exaclty how to solve math problems step by step. The problems are done in real time and in front of a regular classroom. These videos are intended to help you learn how to solve math problems, review how to solve a math problems, study for a test, or finish your homework.I post all of my videos on youtube but if you are looking for other ways to interact with me and my videos you
1.8 How to find the inverse of a rational function and verify it's inverse - Free Math Videos
By Mr. McLogan's Math Channel
In this video tutorial I will show you how to find the inverse of a function f(x). I do this by first writing the equation substituting y for f(x). I then solve the equation for x. The result is the inverse. The inverse can be written, substituting y back in for x, and x for y. I also show how to verify that a function is an inverse of another function. I show how to solve math problems online during live instruction in class. This is my way of providing free tutoring for the students in my class and for students anywhere in the world. Every video is a short clip that shows exaclty how to solve math problems step by step. The problems are done in real time and in front of a regular classroom. These videos are intended to help you learn how to solve math problems, review how to solve a math problems, study for a test, or finish your homework.I post all of my videos on youtube but if you are looking for other ways to interact with me and my videos you