2 Sets of Numbers
Numbers arrive in stages, and each stage exists because the one before it could not do something. Counting needs the natural numbers; recording nothing needs zero; owing needs the negatives; sharing needs fractions; measuring a diagonal needs something none of those provide. This chapter names each set and the notation that goes with it.
2.1 From counting numbers to real numbers
2.2 Interval notation
2.3 Radicals and rational powers
2.3.1 Rationalising the denominator
2.4 Complex numbers
2.4.1 Arithmetic with complex numbers
2.5 Practice problems
2.2 Interval notation
2.3 Radicals and rational powers
2.3.1 Rationalising the denominator
2.4 Complex numbers
2.4.1 Arithmetic with complex numbers
2.5 Practice problems
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