The history of the notation for exponents:
· Pietro Cataldi (1580): 5 3(𝑐𝑟𝑜𝑠𝑠𝑒𝑑) for 5x³
· Adriaan van Roomen (1590) : x(4) for x⁴
· Pierre Hérigone (1608) : x3 for x³ and 5x4 for 5x⁴
· James Hume (1636) : x𝑖𝑖𝑖 for x³.
· Descartes (1637): x³
Productive morning, Ukrainian style.
Today, in just 18 minutes, service members of #UAarmy shot down 4 russian helicopters that were spoiling beautiful autumn skies in the south of Ukraine.
No place for Alligators here.
The local climate is hostile towards them.
The first chapter of the book, "About this book", introduces the aim and purpose of the book and helps any reader to understand what s/he can find inside. How is this book useful for you? Guess it when reading this chapter https://t.co/ZTbk20BFS3