Build on your class' understanding of limits by exploring limits as x approaches infinity. The instructor explains how to find the limit by considering specific values. He then makes a connection to the graphical representation.

Looking for a video to reinforce concepts of limits? This video reviews the process of finding one-sided limits. Both a graphical and algebraic approach is outlined. 

Do you need a way to reinforce concepts? This video reviews the rules of finding limits at infinity for rational expressions. For limits that do not exist, it also shows how to determine algebraically whether it approaches positive or...

Sal explains the Big Bang and the spatial concepts of infinity versus a 'sphere' of expanding matter in detail.

Introduce your class to integers with this video. This video provides a definition of integers, using examples of numbers that are integers and numbers that are not. A straightforward video that could be used to teach the concept as well...

Pi is not a repeating decimal, although it goes on and on and on forever after the decimal. Why? Because nothing repeats. So what is a repeating decimal? How is a repeating decimal written? Can a fraction be a repeating decimal? Want to...

Just a simple straightforward definition and example of what constitutes the y-axis.

Just a simple straightforward definition and example of what constitutes the x-axis.

Introduce your class to integers with this video. This video provides a definition of integers, using examples of numbers that are integers and numbers that are not. A straightforward video that could be used to teach the concept as well...

The teacher shows how draw a number line and graph an inequality using an open circle. She also shows how to graph a set of numbers on a number line.

Is the limit infinite or DNE? The video works through an example of finding a vertical asymptote for a trigonometric function and determining the one-sided limits on each side of the vertical asymptote.

It's a bird, it's a plane, it's Superman. No, it's really a plane. A plane is named by identifying three points with the exception that they do not form a straight line. A plane can also be identified by a single letter naming it. The...

A ray is a line that begins at an identified point and then goes on forever in one direction. The identified point is called the endpoint. There needs to be another identified point on the line to be able to identify the line as a ray....

Video addresses limits of rational functions that can be simplified by factoring. Also provides examples of how to find the limit of a function as x approaches infinity.

A discussion with Steven Strogatz, author of The Joy of X: A Guided Tour of Math, from One to Infinity. Strogatz makes concepts such as infinity understandable in an entertaining way. Aired Oct. 5, 2012 [28:53 min]

A video on how to find the limit of a function as x approaches positive or negative infinity.

A demonstration of finding the limit of a function using two horizontal asymptotes.

A video that explains the limit of a function as x approaches zero from the left or from the right.

This video shows hos to find the limit of a function as the value of x approaches plus or minus infinity.

Sal continues the discussion on e, this time digging deeper into the mathematical definition of e in this video. [5:38]

This lesson shows how to recognize when a tangent line is vertical by determining if the slope is undefined. It is 2 of 7 in the series titled "Finding a Vertical Tangent."

This lesson shows how to recognize when a tangent line is vertical by determining if the slope is undefined. It is 5 of 7 in the series titled "Finding a Vertical Tangent."

This lesson shows how to recognize when a tangent line is vertical by determining if the slope is undefined. It is 6 of 7 in the series titled "Finding a Vertical Tangent."

This lesson shows how to recognize when a tangent line is vertical by determining if the slope is undefined. It is 7 of 7 in the series titled "Finding a Vertical Tangent."