My new book Calculus is available on Leanpub, with a free sample chapter
The golden ratio was mentioned in Euclid’s Elements around 300 BCE, although it was probably known even earlier…
I would probably have been about 8 years old when a question popped into my…
A definite integral is an integral between two finite points a and b:
Here is a spinning wheel, that has a circumference exactly 1 metre. We will perform an experiment where…