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Real numbers - Coggle Diagram
Real numbers
rational number：A rational number is a number which can be written in the form p/q, where p and q is both integers and q≠0.
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Irrational number: Numbers that cannot be expressed as terminating or repeating decimals, or in the form of p/q, where q and p are both integers and q≠0 are called irrational numbers.
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Cuber roots: A number x is a cube root of a number "a" if x3=a. x can be written as 3∫a, a is called the radicand.
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Nth-root: A number x is a nth root of number "a". If xn=a. "a" is called the radicand. n is called the index.
when n is even number, a≥0
when n is an odd number, a can be any real number