In this video, I explain the concept of function transformations, differentiating between outside and inside operations. This ...

In the Introduction to the Derivative video we introduce the notion of the derivative of a function and explain how the derivative captures the instantaneous rate of change of a function. In the ...

The immune system’s ability to remember defeated disease-causing germs and prevent subsequent infections remains incompletely understood, but a study in Science Immunology clarifies an important piece ...