This document contains formulas and definitions related to calculus and trigonometry. It includes:
1) Formulas for addition, subtraction, multiplication, and exponentiation of variables.
2) Definitions of trigonometric functions like sine, cosine, and tangent. It also includes their inverses and various trigonometric identities.
3) Formulas for sums, products, and limits involving variables.
4) Definitions of hyperbolic functions like sinh, cosh, and tanh and their inverses.