Through the use of abstraction and logical reasoning, mathematics evolved from counting, calculation, measurement, and the systematic study of the shapes and motions of physical objects. Knowledge and use of basic mathematics have always been an inherent and integral part of individual and group life. Refinements of the basic ideas are visible in mathematical texts originating in ancient Egypt, Mesopotamia, ancient India, ancient China, and ancient Greece. Rigorous arguments first appear in Euclid's Elements. The development continued in fitful bursts until the Renaissance period of the 16th century, when mathematical innovations interacted with new scientific discoveries, leading to an acceleration in research that continues to the present day.

Today, mathematics is used throughout the world in many fields, including natural science, engineering, medicine, and the social sciences such as economics. Applied mathematics, the application of mathematics to such fields, inspires and makes use of new mathematical discoveries and sometimes leads to the development of entirely new disciplines. Mathematicians also engage in pure mathematics, or mathematics for its own sake, without having any application in mind, although applications for what began as pure mathematics are often discovered later.

- simple calculator
- scientific calculator
- graph calculator + numeric calculator
- integral calculator = integrator
- plot calculator = function + implicit + parametric + polar plottor
- plot2D calculator = 2D function + implicit + parametric + derivative + integral + polar plottor
- ODE calculator = Ordinary Differential Equation plottor
- surface3D calculator = 3D plottor
- plot3D IE calculator = 3D plottor for Internet Explorter
- contour3D calculator = 2D surface + 3D plottor
- drawing = drawing + overlap plot = math hand
- math handbook calculator = math calculator = all-in-one calculator

the Math Handbook Calculator has the function of machine learning. It is unique in the world to solve the function of any order (such as 0.5 order) differential equations. Enter mathematical formulas on the Mathematics Handbook website, click continuously to calculate calculus, solve equations, give analytical solutions and numerical solutions and diagrams, interactively zoom in the drawing, and zoom in with the mouse wheel. You can use it on your mobile phone to learn computing and development anytime, anywhere.

- html + javaScript: DrHuang.com/index/htm
- python programimg: DrHuang.com/index/python
- math programmimg: DrHuang.com/index/mathHand

more

- Mathematical Symbols

- Mathematics Handbook

- Elementary Math

- Higher Mathematics

- Fractional Calculus

- Fractional differential equation

- Function

- Formula Charts

- Math software: mathHandbook.com
- Math (translattion from Chinese)

- Math handbook (translattion from Chinese)
- Example: