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 ...

U.S. Rep. Tony Gonzales staffer's death under investigation; her body was on fire, official said. Robert Redford and Paul Newman found something rare in Hollywood: A true and lasting friendship ICE ...

Trigonometry is the mathematics of triangles and it is quite amazing that the understanding of the simple triangle leads to so many applications. The fundamental fact is that the angles of a triangle ...