Brian McLogan
Learn How to Compose Two Rational Functions and Simplify
Learn how to compose two functions where one or both of those functions is/are rational. To compose two functions means to express one of the functions as a function of the other function. This is done by replacing the input variable of...
Brian McLogan
How to determine the value using compound interest
Learn about compound interest. We will look at how to determine the final value, initial value, interest rate and years needed. We will investigate problems compounded continuously, daily, weekly, monthly, quarterly and yearly. These...
Professor Dave Explains
Practice Problem: Calculations Involving pH and Ka
We know a bit about acids and bases, including the definitions of pH and pKa, as they relate to an acid-base equilibrium. If we have a weak acid and its concentration, as well as the pH of the solution, can we calculate the Ka for the...
Curated Video
Using Multiplication to Find Percent Increase
In this video, the teacher explains how to use multiplication to find a percent increase. They demonstrate how to write a percent increase problem as a product of the original amount and provide examples to illustrate the concept.
Curated Video
Solving Quadratic Equations by Taking the Square Root
In this lesson, students will learn how to solve quadratic equations by taking the square root. The teacher explains the process step by step, using examples to illustrate the concept.
Curated Video
Understanding Linear Expressions and Equations
In this video, the teacher explains the difference between linear expressions and linear equations using the example of Matt buying candy and soda. The teacher highlights the importance of assigning variables to different items and...
Curated Video
Writing Values as Expressions with Powers of 10
In this video, students learn how to write values as expressions containing powers of 10 using scientific notation. They are taught that when multiplying a number by a power of 10, the value of each digit increases and when dividing by a...
Curated Video
Writing Complex Algebraic Expressions Using Area Models
In this video, the teacher explains how to write complex algebraic expressions for real-world scenarios using variables and operations. The teacher emphasizes the importance of defining the variable before writing the expression and...
Curated Video
Introducing Ionic 2 (Video 10)
Hybrid apps are changing the way people build mobile applications. With Ionic 2, hybrid app developers are gifted with not only a fresh, well-built, and powerful platform, but also a tool to enjoy their development experience. Apps can...
IDG TECHtalk
Using f-strings in Python to format output
The f-string feature in Python lets you format output in strings by using convenient text templates. This walkthrough shows you the basics of how to use f-string formatting in your code.
Brian McLogan
Learning how to solve a proportion with cross products
👉 Learn how to solve proportions. Two ratios are said to be proportional when the two ratios are equal. Thus, proportion problems are problems involving the equality of two ratios. When given a proportion problem with an unknown, we...
Brian McLogan
How to cross multiply to solve a proportion
👉 Learn how to solve proportions. Two ratios are said to be proportional when the two ratios are equal. Thus, proportion problems are problems involving the equality of two ratios. When given a proportion problem with an unknown, we...
Brian McLogan
Why do we use use parenthesis and brackets
In this video series I show you how to simplify an expression by following the order of operations. In these examples we have an expression that has parenthesis and brackets. We simplify the inner most parenthesis first and then work...
Brian McLogan
Solving an equation with two terms in the numerator
👉 Learn how to solve two step rational linear equations. A linear equation is an equation whose highest exponent on its variable(s) is 1. A rational equation is an equation containing at least one fraction whose numerator and (or)...
Brian McLogan
Evaluating an expression with one variable ex 6, (3p - 5)^2; p = 3
👉 Learn how to evaluate mathematics expressions. A mathematics expression is a finite combination of numbers and symbols formed following a set of operations or rules. To evaluate a mathematics expression means to obtain the solution to...
Brian McLogan
Evaluate an expression with two variables ex1, (3x - y)^2; x = 4; y = 1
👉 Learn how to evaluate mathematics expressions. A mathematics expression is a finite combination of numbers and symbols formed following a set of operations or rules. To evaluate a mathematics expression means to obtain the solution to...
Brian McLogan
Evaluating expressions with order of operations, ((a^2)/4b)+c When a=12, b=9 and c=4
👉 Learn how to evaluate mathematics expressions. A mathematics expression is a finite combination of numbers and symbols formed following a set of operations or rules. To evaluate a mathematics expression means to obtain the solution to...
Brian McLogan
Simplifying an expression with parenthesis ex 3, 52 + 8^2 - 3(4 - 2)^3
👉 Learn how to simplify mathematics expressions. A mathematis expression is a finite combination of numbers and symbols formed following a set of operations or rules. To simplify a mathematics expression means to reduce the expression...
Brian McLogan
I still don't get in simplifying basic expressions
👉 Learn how to simplify mathematics expressions. A mathematis expression is a finite combination of numbers and symbols formed following a set of operations or rules. To simplify a mathematics expression means to reduce the expression...
Brian McLogan
Determine the missing value based on the length of two secant lines
Learn how to solve problems with secant lines. A secant line is a line that intersects a circle at exactly 2 points in contrast to a tangent line which is a line that touches a circle at exactly one point. When two secant lines...
Curated Video
Power BI Masterclass - Advanced DAX - Recurring Customers and Their Sales Calculation
In this video, we will cover some advanced DAX to find recurring customers and their sales calculation. This clip is from the chapter "DAX, R, and Gateways" of the series "Power BI Masterclass".In this section, we will be covering DAX,...
Curated Video
Python 3: Project-based Python, Algorithms, Data Structures - Classes and objects - an introductory look
Explore lambda expressions and use them in conjunction with other functions like map This clip is from the chapter "Python in-depth" of the series "Python 3: Project-based Python, Algorithms, Data Structures".This section is about Python...
IDG TECHtalk
Tidy eval in R: A simple example
Do you want to use ggplot2, dplyr, or other tidyverse functions in your own functions? This easy example shows how.