Copyright, 1929, by the Associated Press. New York Times subscribers* enjoy full access to TimesMachine—view over 150 years of New York Times journalism, as it ...

In this video, I explain the concept of function transformations, differentiating between outside and inside operations. This math tutorial visually demonstrates how multiplying or adding constants ...

I make short, to-the-point online math tutorials. I struggled with math growing up and have been able to use those experiences to help students improve in math through practical applications and tips.

(1) Linear Algebra: Vector spaces over R and C, linear dependence and independence, subspaces, bases, dimension; Linear transformations, rank and nullity, matrix of a linear transformation. Algebra of ...

Most famous equation: Einstein's E = mc2, which means energy is equal to mass times the speed of light squared. Known digits of pi: More than 105 trillion digits Digits of pi NASA uses for equations: ...