Khan Academy: Functions Continuous at Specific X Values

A step-by-step demonstration on how to solve an equation with an absolute value and a solution equal to zero. [1:47]

Create functions that match one variable to the other in a two-variable equation. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Find all the inputs that correspond to a given function output, using the function's graph. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Interpret expressions with function notation in terms of the context that the function models.

Demonstrates how to graph a quadratic function by creating a table of values. This video also appears in the Algebra: Functions strand. [6:03]

An instructional video explaining the concept of function inverses. A linear function is given and a diagram is drawn to show the mapping of some elements of the domain to the corresponding elements in the range. The inverse of the...

The final segment in the Khan Academy's series on function inverses. Similar to the previous video, this segment does another example for finding the inverse of a quadratic function. Again the instructor explains the need for restraints...

Video utilizing the Squeeze Theorem to prove that the limit as x approaches 0 of (sin x)/x is equal to 1. Incorporates trigonometry and the unit circle. Illustrates the result graphically on a virtual graphing calculator. This video is...

Video lesson proving the derivative of the e^x by using the derivative of the natural logarithm of x function. Includes link to additional practice at the top of the video. [4:40]

Video lesson proving the derivative of the natural logarithm of x function using the limit definition of a derivative. Includes link to additional practice at the top of the video. [9:52]