Curated Video
Biotic Factors: How Living Things Affect Ecosystems and Communities
This video is a lecture presentation on biotic factors. The presenter defines biotic factors and explains how they can affect communities and ecosystems. The focus is on living factors, such as availability of food, arrival of new...
Brian McLogan
Using proportions to find the value given a certain percentage, 120% of what is 90?
👉 Learn how to solve problems using percents. When solving problems with percents we will either convert the percents to decimal form or use proportions to solve. We will look to solve for the percent of change, the original price,...
Brian McLogan
Algebra 2 - solving an equation with the equality of logarithms log3 (x^2 - 15) = log3 (2x)
In this video series I will show you how to apply the equality of exponents to solve an equation. When we look at a simple equation of two exponents with the same base we can understand that their powers must also be equal. We will use...
Brian McLogan
Label horizontal reflection and shift from a absolute value graph
👉 Learn how to identify transformations of functions. Transformation of a function involves alterations to the graph of the parent function. The transformations can be dilations, translations (shifts), reflection, stretches, shrinks,...
Brian McLogan
How to graph an ellipse by first completing the square
Learn how to graph horizontal ellipse which equation is in general form. A horizontal ellipse is an ellipse which major axis is horizontal. When the equation of an ellipse is written in the general form, we first rewrite it in standard...
Brian McLogan
Finding the vertex focus and directrix by completing the square
Learn how to graph a horizontal parabola. A parabola is the shape of the graph of a quadratic equation. A parabola is said to be horizontal if it opens to the left or opens to the right. A horizontal parabola results from a quadratic...
Brian McLogan
Find the value k that make the function continous piecewise function
👉 Learn how to find the value that makes a function continuous. When given a piecewise function which has a hole at some point or at some interval, we fill the hole at the point or over the interval by looking for the value of the...
Brian McLogan
Change in domain based on reflection and translation
Change in domain based on reflection and translation
Brian McLogan
Review factoring a trinomial using ac method, 3g^2 + 8g + 4 = 0
we find two factors of the product of the constant term (the term with no variable) and the coefficient of the squared variable whose sum gives the linear term. These factors are now placed in separate brackets with x to form the factors...
Brian McLogan
What do I need to know to solve a quadratic
👉Learn how to solve quadratic functions. Quadratic equations are equations whose highest power in the variable(s) is 2. They are of the form y = ax^2 + bx + c. There are various techniques which can be applied in solving quadratic...
Brian McLogan
Using the quadratic formula to find the zeros of a polynomial
👉 Learn how to solve quadratic equations using the quadratic formula. A quadratic equation is an equation whose highest power on its variable(s) is 2. The quadratic formula is a formula which can be used to find the roots of (solve) a...
Brian McLogan
Find the vertex and x intercepts of a quadratic
👉 Learn about the parts of a parabola. A parabola is the shape of the graph of a quadratic equation. A regular palabola is the parabola that is facing either up or down while an irregular parabola faces left or right. A quadratic...
Curated Video
Simplifying Expressions with Square Roots
In this video, the teacher explains how to simplify expressions involving square roots. They demonstrate how to identify perfect square factors and split the square root into smaller terms to simplify it. The teacher also explains the...
Math Fortress
GRE Arithmetic: Integers (Part 3 of 4)
This video is a review of basic arithmetic for the purpose of solving problems on the quantitative reasoning section of the GRE revised General Test. This video covers the basics of integers. Topics covered include: Division, Division as...
Curated Video
Identifying Exponential Growth & Decay Functions
In this lesson on exponential growth and decay, students will learn to identify and interpret exponential functions. The teacher explains the characteristics of exponential growth and decay functions using real-world examples such as...
The Wall Street Journal
The Bailout & The CFO
What does the government's big economic rescue plan mean for business, and how might it enhance or hobble the landscape for enterprise in years to come?
Brian McLogan
Find the foci vertices and center of an ellipse by completing the square
Learn how to graph horizontal ellipse which equation is in general form. A horizontal ellipse is an ellipse which major axis is horizontal. When the equation of an ellipse is written in the general form, we first rewrite it in standard...
Brian McLogan
Find and classify the discontinuity of the rational function
👉 Learn how to classify the discontinuity of a function. A function is said to be discontinuos if there is a gap in the graph of the function. Some discontinuities are removable while others are non-removable. There is also jump...
Brian McLogan
How to take the square root of a number using prime factorization, sqrt(64)
👉 Learn how to find the square root of a number. To find the square root of a number, we identify whether that number which we want to find its square root is a perfect square. This is done by identifying a number which when raised to...
Brian McLogan
Learn how to simplify the product of square root of two numbers ex 4, -3root(12).root(7)
👉 Learn how to multiply radicals. A radical is an expression or a number under the root symbol. To multiply radicals with the same root, it is usually easy to evaluate the product by multiplying the numbers or expressions inside the...
Brian McLogan
Factoring out the GCF to solve a quadratic equation
👉Learn how to solve a quadratic equation by factoring out the GCF. When factoring out the GCF from an equation we will be looking for what the terms have in common. This method is very useful for quadratic equations that does not have...
Brian McLogan
Factoring Blitz # 3 - Factoring Trinomials a = 1
👉Learn how to factor quadratics. A quadratic is an algebraic expression having two as the highest power of its variable(s). To factor an algebraic expression means to break it up into expressions that can be multiplied together to get...
Brian McLogan
Summary for solving a quadratic by factoring using various methods
👉Learn how to solve quadratic functions. Quadratic equations are equations whose highest power in the variable(s) is 2. They are of the form y = ax^2 + bx + c. There are various techniques which can be applied in solving quadratic...
Brian McLogan
Learn how to factor an expression from a larger expression ex 32, y(y - 4) + (y - 4)
👉Learn how to factor quadratics. A quadratic is an algebraic expression having two as the highest power of its variable(s). To factor an algebraic expression means to break it up into expressions that can be multiplied together to get...