For example: 3-2= 1, read: the difference between 3 and 2 is 1.
Mathematics (Mathematics or maths, from the Greek word "Má thē ma"; Often abbreviated as "mathematics"), it is a discipline that studies concepts such as quantity, structure, change, space and information, and belongs to a formal science from a certain point of view. Mathematicians and philosophers have a series of views on the exact scope and definition of mathematics.
Extended data
Other mathematical operations
First, multiple.
An integer can be divisible by another integer, which is a multiple of another integer. For example, 15 can be divisible by 3 or 5, so 15 is a multiple of 3 and 5.
(2) The quotient obtained by dividing one number by another. For example, a÷b=c, that is, A is a multiple of B, for example, A÷B=C, it can be said that A is C times that of B.
A number has countless multiples, that is, the set of multiples of a number is infinite. Note: you can't call a number a multiple alone, you can only say who is a multiple of who.
Second, the scope.
In the classical definition of mathematical nouns and functions, the range of values changed by the change of variables is called the range of values of the function, while in the modern definition of functions, it refers to the set of all images corresponding to all elements in the definition domain under a corresponding law. F: In a → b, the range is a subset of set B. If f(x)=x, then the range of f(x) is the range of function f(x).
Third, the limit.
The basic concept of calculus, a branch of mathematics, and the generalized "limit" is "infinitely close, never reaching".
Fourth, integration.
It is the core concept in calculus and mathematical analysis. Usually divided into definite integral and indefinite integral. Intuitively speaking, for a given positive real function, the definite integral in the real number interval can be understood as the area value (a definite real value) of the curve trapezoid surrounded by curves, lines and axes on the coordinate plane.
Verbs (short for verb) and
New things obtained by adding things with the same attributes, such as 2m+3m = 5m; 30 kg +50 kg =80 kg. But things with different attributes and different units cannot be added by numbers or simply added, such as 5 m/s+10 s; 5 minutes+1 hour.
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