Khan Academy
Khan Academy: Algebra: Applying Quadratic Functions 2
Video solving an application problem by finding a quadratic equation to represent the distance of a diver above the water based on his time in the air by determining his average velocity. Equation is solved using the quadratic formula....
Khan Academy
Khan Academy: Calculus: Curl 2
Video demonstrating how to calculate curl for a specific three-dimensional vector field. [10:17]
Khan Academy
Khan Academy: Algebra: Applying Quadratic Functions 3
Video solving an optimization application problem by finding a quadratic equation to represent the profit for a given product based on its selling price. Problem is solved by finding the selling price that gives a maximum value for the...
Khan Academy
Khan Academy: Algebra: Algebra: Slope
This video begins with two points and demonstrates how to graph them on a coordinate plane and then use the graph to help calculate the slope. There are two additional examples that do not show a graph but show how to calculate slope...
Khan Academy
Khan Academy: Algebra: Interesting Polynomial Coefficient Problem
Video demonstrates how to determine the coefficients of a third degree polynomial when given the zeros of the polynomial and the y-intercept. [16:15]
Khan Academy
Khan Academy: Calculus: Another U Substitution Example
Video lesson on finding the indefinite integral of a composite trigonometric function by using integration by substitution. [5:57]
Khan Academy
Khan Academy: Algebra: Exponent Properties 7
Video simplifying an algebraic expression using various rules of exponents. [4:51]
Khan Academy
Khan Academy: Algebra: Officer on Horseback
This video demonstrates how to set up and solve a system of equations in order to answer a question posed in a word problem. The solution utilizes the equation d=rt. [8:54]
Khan Academy
Khan Academy: Algebra:factoring Trinomials With Non 1 Leading Coeff. By Grouping
Video demonstrates how to use the factor by grouping method to factor a trinomial with a leading coefficient of 4. [5:38]
Khan Academy
Khan Academy: Algebra: More Advanced Ratio Problem With Algebra
A step-by-step instructional video on how to solve a ratio problem using algebra. [9:58]
Khan Academy
Khan Academy: Trigonometry: Fun Trig Problem
Video shows solving an equation with sine and cosine by using a trigonometric identity and solving the resulting quadratic equation. [10:01]
Khan Academy
Khan Academy: Calculus: Solid of Revolution (Part 7)
Video lesson showing how to find the volume of a solid of revolution that is rotated around a line other than the x- or y-axis. Example is solved using the shell method and the solution is finished in the following video. [10:06]
Khan Academy
Khan Academy: Calculus: Divergence 1
Video introducing divergence by calculating it for two specific vector fields. Begins to explain the intuition behind divergence by drawing a particular vector field. [10:20]
Khan Academy
Khan Academy: Algebra: Radical Equivalent to Rational Exponents
Video simplifying an algebraic expression containing a fractional exponent by writing it using radicals and then simplifying further. [2:56]
Khan Academy
Khan Academy: Algebra: Negative and Positive Exponents
Video simplifying an algebraic expression with negative exponents and then evaluating it when x equals 2. [2:19]
Khan Academy
Khan Academy: Trigonometry: Trig Identities Part 3
Video expands upon trigonometric identities derived in previous videos. Identities in this lesson include sine and cosine of the opposite of an angle, sine of an angle plus pi divided by two, and the sine of the difference of two angles....
Khan Academy
Khan Academy: Algebra: Complex Numbers: Complex Numbers (Part 1)
Video first reviews what imaginary and complex numbers are. Shows example of graphing a complex number. Gives general explanations and formulas for adding, subtracting, multiplying and dividing complex numbers. Includes link to...
Khan Academy
Khan Academy: Algebra: Ca Algebra I: Graphing Inequalities
This video demonstrates how to solve several test questions related to linear equations and linear inequalities. It demonstrates solving equations, graphing linear inequalities in two variables, and graphing linear equations. [11:42]
Khan Academy
Khan Academy: Algebra: Box and Whisker Plot
Video demonstrates how to create a box-and-whisker plot from a set of data. [13:14]
Khan Academy
Khan Academy: Arithmetic and Pre Algebra: Multiplication 8: Multiplying Decimals
This video shows how to multiply two decimals. Practice problems are available. [3:47]
Khan Academy
Khan Academy: Algebra: Graphing Radical Functions
Video showing how to graph a radical function by specifically choosing values for x that result in easy-to-plot values of y and then plotting the points. [10:17]
Khan Academy
Khan Academy: Arithmetic and Pre Algebra: Algebraic Expressions Lcm
This video explains how to find the least common multiple of algebraic expressions. Practice problems are available. [4:40]
Khan Academy
Khan Academy: Geometry: Ca Geometry: Secants and Translations
Demonstrates solutions to problems #76-80 of California Geometry released state test questions. Problems address tangents to circles, secants to circles, intercepted arcs, translations on the coordinate plane, and rotations on the...
Khan Academy
Khan Academy: Algebra: Introduction to Logarithms
Explains what a logarithm is and the relationship between logarithms and exponents. Practice problems available. [9:48]