According to Baidu education data, the first power of any number is equal to itself, so the first power of 3 is equal to itself 3.

The first force is the first force. In mathematics, "once" refers to a power (such as m n). When the exponent of a number or algebra is 1, we can call it a power, that is, the exponent of this power is 1. The operation of finding the product of n identical factors is called power, and the result of power is called power. Where a is called the base and n is called the exponent.