Mathematical notation facts for kids
Mathematical notation is like a special language used in subjects like math, science, and computer programming. It helps people write down problems and ideas clearly using different symbols. Imagine it as a secret code that mathematicians use to talk to each other!
In this special language, different symbols have different meanings:
- Numbers and Variables: You'll see numbers like 1, 2, or 3. You'll also see letters like x and y. These letters are called variables. They stand for numbers that can change.
- Functions: These are like actions or operations. They take numbers or variables and do something with them. For example, the + sign is a function that adds two numbers together.
- Advanced Ideas: Sometimes, notation is used for more complex math ideas. These include limits and derivatives.
Some mathematical notations even use diagrams. These are small drawings that help show what a concept means. For example, Penrose graphical notation uses pictures to explain tensors. Another example is Coxeter–Dynkin diagrams. They are used for certain problems in geometry.
Contents
Different Ways to Write Equations
There are different ways to write down an equation, like "two plus three."
Infix Notation
This is the most common way you see math problems. The function symbol, like +, goes between the numbers it acts on.
- Example: 2 + 3
Prefix Notation
In this way, the function comes first, before the numbers it acts on.
- Example: + 2 3
- This is sometimes called Polish notation.
- Some computer languages, like LISP, use this style.
Postfix Notation
Here, the numbers come first, and then the function comes after them.
- Example: 2 3 +
- This is also known as reverse Polish notation.
- The computer language Postscript uses this method.
Tools for Math Notation
There are special computer programs that help show mathematical notation.
KaTeX
KaTeX is a JavaScript tool. It helps display math symbols and equations on any web browser. This means you can see math written correctly on websites.
LaTeX
LaTeX is a free program. It helps create documents with mathematical notation. You can use it to make professional-looking math papers. It often creates files in PDF.
See also
In Spanish: Notación matemática para niños
