Exponent is a power operation a? A parameter in (a≠0), where a is the base, n is the exponent, and the exponent is located in the upper right corner of the base. Power operation means the multiplication of the exponent base. When n is a positive integer, a? Represents n a multiplication. When n=0, a? = 1。
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The formation of the concepts of exponent and power is quite tortuous and slow. There are many symbols of power, and the symbols are also diverse.
There are at least ten different ways to write the word "right" in ancient China.
Liu Hui made a note for "Nine Chapters Arithmetic", in which he wrote: "This product is called the field power, and everything is multiplied by it (the product of the multiplication of length and width is called the power)." This is the first time that power appears in mathematical literature.