Numbers (for mathematical learners)

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Numbers (for mathematical learners) 作者: Mind Map: Numbers (for mathematical learners)

1. Real ex: √5, √4, 5/6, π, 7, -7

1.1. Irrational ex: √5, π

1.2. Rational ex: √4, 5/6, 7, -7

1.2.1. Integers ex: 7, -7

2. Imaginary ex: √-4, 5/0