PBS
A Hierarchy of Infinities
What's larger than infinity? Infinity plus one! Scholars learn about the different levels of infinity in the video that uses bijections as a way to show infinite sets as being the same size. They also and see that the set of real...
Brightstorm
Definition of One-to-One Functions
Functions are special relations, but are there special functions? A concept video defines a one-to-one function. Three problem videos cover examples in determining whether a relation is a function and whether it is a one-to-one...
Krista King Math
Calculus - Functions
An understanding of the basics of a function is key to success in upper-level math courses! A video describes in detail the important aspects of functions including domain, range, combinations, compositions, and vertical line test.
Calculus Expert
Determine Whether a Function is 1 to 1
Do you want to play a little one-to-one? Learn to determine algebraically if a function is one-to-one. Work through two examples using the video as a guide.
Math Mammoth
Math Mammoth: How Many More?
This lesson is an introduction to subtraction but without using the symbol yet. Instead, the operation is presented as 'how many more' and visual images are shown using one-to-one correspondence to demonstrate the difference between two...