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In what grade did you learn the calculation of power in People’s Education Edition?

The calculation of power in the People's Education Press was learned in the eighth grade.

Operation, in mathematics, operation is a behavior that obtains new quantities through possible combinations of known quantities. The essence of operations is the mapping between sets.

Generally speaking, operations refer to algebraic operations, which are a correspondence in a set. For a pair of elements a and b taken out in order from set A, there is a unique third element c in set A corresponding to them, which is called an operation defined in set A.

Two operations can be derived from this operation, that is, one of a and b is regarded as what is sought, and c is regarded as known. The operation obtained in this way is called the original operation. Inverse operation. For example, addition is the operation of finding a + b = c when a and b are known. Then the operation of finding b when a and c are known, or the operation of finding a when b and c are known is the inverse operation of addition, which is called subtraction. .

Algebraic operations are all binary operations. There are many examples of binary operations. Addition, subtraction, multiplication, division, exponentiation, square root, logarithm between numbers; intersection, union, complement, difference, Cartesian product between sets; logical AND, logical OR, etc.

Related famous quotes

1. Countability rules the entire world of quantity, and the four arithmetic operations can be regarded as all the equipment of a mathematician. ——Maxwell

2. Robots can surpass humans in terms of work intensity, computing speed and memory function, but they cannot surpass humans in terms of consciousness and reasoning.

——Zhou Haizhong