numbers were oringinaly squiggly lines that came from objects and ideas that came from villagers. numbers also came from animals. they used shapes as numbers
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Rational numbers are numbers that can be written as a fraction. Irrational numbers cannot be expressed as a fraction.
The concept of counting numbers (the natural numbers) probably predates human beings because many animals can distinguish between small numbers.
Yes it is!
Their position relative to a reference point - often the origin.
Yes, but only if the domain is the real numbers. The derivative is y = 1.