Brian McLogan
Finding all the Solutions of a Higher Order Polynomial by Factoring
👉 Learn how to find all the zeros of a polynomial. A polynomial is an expression of the form ax^n + bx^(n-1) + . . . + k, where a, b, and k are constants and the exponents are positive integers. The zeros of a polynomial are the values...
Brian McLogan
Master how to factor a higher order polynomial by grouping
Master how to factor a higher order polynomial by grouping
Brian McLogan
Using triangles to evaluate for the difference formula of tangent
👉 Learn how to evaluate the secant of the sum or difference of two angles using the sum/difference formulas. To do this, we first use the Pythagoras theorem to obtain all the sides of the right triangle in the unit circle. Recall that...
Brian McLogan
How to determine if a function graph has an inverse and if the inverse is a function
👉 Learn how to find the inverse of a function. The inverse of a function is a function that reverses the "effect" of the original function. One important property of the inverse of a function is that when the inverse of a function is...
Brian McLogan
Learn how to find the derivative of tangent using the quotient rule
👉 Learn how to find the derivative of a function using the quotient rule. The derivative of a function, y = f(x), is the measure of the rate of change of the function, y, with respect to the variable x. The process of finding the...
Brian McLogan
How to find all the six trigonometric function given a triangle with a radical
👉 Learn how to evaluate the six trigonometric functions given a right triangle. A right triangle is a triangle with 90 degrees as one of its angles. A right triangle is made up of two legs, which formed the sides of the 90 degrees angle...
Brian McLogan
How to evaluate for three different values of a piecewise function
👉 Learn how to evaluate a piecewise function. A piecewise function is a function which uses different rules for different intervals. When evaluating a piecewise function, pay attention to the constraints of each function as you can only...
Brian McLogan
Law of Sines Ambiguous Case - Two Cases
👉 Learn how to determine if a given SSA triangle has 1, 2 or no possible triangles. Given two adjacent side lengths and an angle opposite one of them (SSA or ASS), then there are 3 possible cases: there can be 1 solution, 2 solutions,...
Brian McLogan
Review of transformations of functions from Algebra 2
👉 Learn how to determine the transformation of a function. Transformations can be horizontal or vertical, cause stretching or shrinking or be a reflection about an axis. You will see how to look at an equation or graph and determine the...
Brian McLogan
Evaluate using the half angle formula for cosine
👉 Learn how to evaluate the Sine of an angle using the half-angle formula. The half-angle formula for Sine is helpful when you need to determine the exact value of function given an angle but cannot use a calculator or the angle is not...
Brian McLogan
How to find the estimate of an angle in radians - Help me on math
👉 Learn about angles in trigonometry. An angle is the figure formed by two rays sharing the same endpoint. The two rays are called the sides of the angle while the common endpoint of the two rays is called the vertex of the angle. Angle...
Brian McLogan
Master The Domain of Rational and Radical Functions
Master The Domain of Rational and Radical Functions
Brian McLogan
What you need to know | Rational Functions
In this video I present a set of problems to help prepare for learning about rational functions in precalculus. While rational functions is explored in Algebra 2 I decided to make it a separate unit in precalc based on how many students...
Brian McLogan
Master Verifying Trigonometric Identities using the Sum and Difference formulas
Master Verifying Trigonometric Identities using the Sum and Difference formulas
Brian McLogan
Master Verifying trigonometric identities with multiple steps
Master Verifying trigonometric identities with multiple steps
Brian McLogan
What you need to know | Trigonometry
In this video we will cover the key topics you will need to know before starting our chapter on Trigonometry in Pre-calculus. We will start by working through the Pythagorean Theorem and then working through the trigonometric identities...
Khan Academy
Limit Examples (Part 1), Limits, Differential Calculus
One example is finding the limit as x approaches -1 of (2x+2)/(x+1), solved by simplifying the expression and then explored intuitively by looking at the left and right-hand limits. The second example of finding the limit as x approaches...
Khan Academy
Introduction to Limits 2, Limits, Precalculus
Sal explains limits by looking at a basic example of a discontinuous function and takes a more intuitive point of view before looking at a formal mathematical definition in later videos. He starts by introducing the notation for limits...
Other
Mhs Math: Vertical Asymptotes
This goal of this video lesson is to find vertical asymptotes of rational functions and determine the behavior of the curve near the asymptotes.
Khan Academy
Khan Academy: Induction: Proof by Induction
Watch a video proving an expression for the sum of all positive integers up to and including n by induction.
Sophia Learning
Sophia: Graphing an Exponential Function Using a Table
Graph an exponential function on a coordinate plane using a table. Assess learning with a quiz. [6:44]