Precalculus
Introduction
A digit is added after every third power of 2
Exponential functions
f(n)=2^n
Inverse functions
f(x) -> f^-1(x)
Any point (x, y) in a graph would be (y, x)
Logarithms
Inverse of exponential functions
⌊log10 n⌋ = (number of digits in n) - 1
General
Reference
Astronomical unit
Heliopause
Notation
≈
Approximately equal
⌊x⌋
Floor
Ceiling
⌈x⌉
Wiki
Exponents
Logarithmic scales
Grow by multiplying