324 Videos for "x"

Using the Inverse Trigonometric Functions  Problem 1
Math › Precalculus › Advanced Trigonometry
How to prove an identity that involves sin^1(x) and cos^1(x). 
Finding an Inverse Graphically  Problem 1
Math › Algebra 2 › Inverse, Exponential and Logarithmic Functions
How to graph an inverse of a function using a piece of paper. 
Finding an Inverse Graphically  Problem 2
Math › Algebra 2 › Inverse, Exponential and Logarithmic Functions
How to graph an inverse of a collection of line segments. 
Derivatives of Logarithmic Functions  Problem 2
Math › Calculus › The Derivative
How to find an equation of the line tangent to the graph of f(x)=ln(x) at a point, and how to use the tangent to approximate values of natural log. 
Derivatives of Exponential Functions  Problem 2
Math › Calculus › The Derivative
How to use the derivative of an exponential function to find an equation of the tangent line to the graph of f(x) = e^x. 
Trigonometric Equations that Require Factoring  Problem 2
Math › Trigonometry › Advanced Trigonometry
How to solve a tangent equation by factoring: tan^2(x)  tan(x)  2 = 0. 
Trigonometric Equations that Require Factoring  Problem 3
Math › Trigonometry › Advanced Trigonometry
How to solve a sine and cosine equation by factoring: ?2 sin2 x ? 5 cos x + 4 = 0. 
Trigonometric Equations that Require Factoring  Problem 2
Math › Precalculus › Advanced Trigonometry
How to solve a tangent equation by factoring: tan^2(x)  tan(x)  2 = 0. 
Trigonometric Equations that Require Factoring  Problem 3
Math › Precalculus › Advanced Trigonometry
How to solve a sine and cosine equation by factoring: ?2 sin2 x ? 5 cos x + 4 = 0. 
Solving a Logarithmic Equation  Problem 5
Math › Algebra 2 › Inverse, Exponential and Logarithmic Functions
Using the property that if log x = log y, then x = y , and checking for extraneous solutions. 
Symmetry of Polar Graphs  Problem 2
Math › Precalculus › Polar Coordinates and Complex Numbers
How to determine if the graph of a polar equation is symmetric about the yaxis when the first test of symmetry doesn't work. 
Trigonometric Equations that Require Factoring  Problem 1
Math › Precalculus › Advanced Trigonometry
How to solve a sine equation by factoring: 2 sin2 x ? 3 sin x + 1 = 0. 
Trigonometric Equations that Require Factoring  Problem 1
Math › Trigonometry › Advanced Trigonometry
How to solve a sine equation by factoring: 2 sin2 x ? 3 sin x + 1 = 0. 
Percents  Problem 3
Math › Algebra › PreAlgebra
How to solve "x% of what is ?" 
Percents  Problem 2
Math › Algebra › PreAlgebra
How to solve "What percent of x is ?" 
Introduction to Polynomials  Problem 6
Math › Algebra 2 › Polynomials
Vocabulary of polynomials, including multiplicity, solution, zeros, roots, xintercepts. 
Composition of Functions  Problem 1
Math › Algebra 2 › Functions
How to calculate the composition of functions. 
Proportions  Problem 1
Math › Algebra › Solving Equations
How to solve proportions when x is in the numerator. 
The Discriminant  Concept
Math › Algebra › Quadratic Equations and Functions
How to calculate and interpret the discriminant of a quadratic equation. 
Composition of Functions  Concept
Math › Algebra 2 › Functions
How to calculate the composition of functions.