For example:
The denominator and divisor of (1) score or score cannot be "0". If the denominator and divisor of a score or fraction are both "0", it violates the provisions of the score or fraction and is meaningless; On the other hand, the denominator and divisor of a fraction or fraction are either "0" or "meaningful";
(2) In the range of real numbers, quadratic roots require that the number of roots cannot be negative (that is, only non-negative numbers-positive numbers and 0). If the square root of the quadratic form is negative, it violates the provisions of the square root of the quadratic form in the real number range and is "meaningless"; On the other hand, the square root of quadratic form is either negative or meets the requirements and is "meaningful".
Question 2: What does at least mean in mathematics? It means the least. For example, at least two angles in a triangle are acute,
That is, at least two angles are acute angles, and there can be more than one, that is, there can be no acute angle or no acute angle, but there can be at least two acute angles and three acute angles.
Question 3: In mathematics.
For example: A, B, C and D are not zero. A: B = C: Dad = BC.
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Question 4: What does mathematics mean? Mathematics (or mathematics) is a discipline that studies concepts such as quantity, structure, change, space and information. In a way, it belongs to a formal science.
In the development of human history and social life, mathematics also plays an irreplaceable role, and it is also an indispensable basic tool for studying and studying modern science and technology.
Branch of mathematics
1: History of Mathematics
2. Mathematical logic and mathematical foundation
X axis and y axis (4 sheets)
A: deductive logic (also called symbolic logic) B: proof theory (also called meta-mathematics) C: recursion theory D: model theory E: axiom * * theory F: mathematical foundation G: mathematical logic and other disciplines 3: number theory A: elementary number theory B: analytic number theory C: algebraic number theory D: transcendental number theory E: Diophantine approximation F: number geometry G: overview. Including commutative rings and commutative algebras, associative rings and associative algebras, non-associative rings and non-associative algebras, etc. H: Modular Theory I: Lattice Theory J: Pan Algebra Theory K: Category Theory L: Homology Algebra M: Algebra K Theory N: Differential Algebra O: Algebra Coding Theory P: Algebra Other Subjects 5: Algebra Geometry 6: Geometry A: Geometry Foundation B: Euclidean Geometry C: Non-Euclidean Geometry (including Riemannian Geometry, etc. D: the geometry of the sphere E: the vector.
7. Topology A: point set topology B: algebraic topology C: homotopy theory D: low-dimensional topology E: homology theory F: dimension theory G: lattice topology H: fiber bundle theory I: geometric topology J: singularity theory K: differential topology L: other disciplines of topology 8: mathematical analysis.
A: Calculus B: Integral C: Series Theory D: Mathematical Analysis Other Subjects 9: Nonstandard Analysis 10: Function Theory A: Real Variable Function Theory B: Simple Complex Variable Function Theory C: Multiple Complex Variable Function Theory D: Function Approximation Theory E: Harmonic Analysis F: Complex Manifold G: Special Function Theory H: Function Theory Other Subjects 1 65433. 2. partial differential equation a: elliptic partial differential equation b: hyperbolic partial differential equations c: parabolic partial differential equation d: nonlinear partial differential equation e: other disciplines of partial differential equations 13: power system a: differential power system b: topological power system c: complex power system d: other disciplines of power system 14. Equation 15: functional analysis a: linear operator theory b: variational method c: topological linear space D: Hilbert space e: function space F: Banach space g: operator algebra h: measure and integral I: generalized function theory j: nonlinear functional analysis k: functional analysis other disciplines 16: computational mathematics a: interpolation method and approximation theory b: ordinary differential. Numerical solution D: numerical solution of integral equation E: numerical algebra F: discretization method of continuous problems G: random numerical experiment H: error analysis I: other disciplines of computational mathematics 17: probability theory A: geometric probability B: probability distribution C: limit theory D: stochastic process (including normal process, stationary process, point process, etc. E: Markov Process F: Random Analysis G: martingale theory H: Applied Probability Theory (specifically applied to related disciplines) I: Other disciplines of probability theory 18: Mathematical statistics A: Sampling theory (including sampling distribution, sampling survey, etc. B: Hypothesis test C: nonparametric statistics D: variance analysis E: correlation regression analysis F: statistical inference G: Bayesian statistics (including parameters) H: experimental design I: multivariate analysis J: statistical decision theory K: time series analysis L: other disciplines of mathematical statistics 19: applied statistical mathematics A: statistical quality control B: reliability mathematics C: insurance mathematics D:.
Question 5: What does 0 mean in mathematics? 0 is the smallest natural number.
0 is not an odd number, but an even number (a special even number that is not positive or negative).
0 is neither a prime number nor a composite number.
0 occupies a position in a multi-digit number. For example, 0 in 108 means that there are no ten digits, so you must not write 18.
0 cannot be used as a multi-digit most significant bit.
0 is neither positive nor negative, but the dividing point between positive and negative numbers. When a certain number x is greater than 0 (that is, X>0), it is called a positive number; On the contrary, when x is less than 0 (that is, X question 6: what is often said in mathematics as' meaningful', then what is meaningless? A: The' meaningless' number of calculation results refers to the following situations:
1 and "gain number" do not meet the known conditions;
2, does not conform to the common sense of life or related things;
3, more than the proper value range;
"Meaningless" in the calculation process refers to:
1, and the denominator of the fraction is zero;
2. The square root of even power is negative;
3. The truth value of logarithmic function is ≤ 0;
4. The power of 0 in the power exponent;
Wait a minute.
Question 7: What makes radicals meaningful? What is meaningful? The number in the mathematical radical cannot be negative.
Question 8: What does/mean in mathematics? 10 fractional mathematics is a science that studies concepts such as quantity, structure, change and spatial model. By using abstract and logical reasoning, the shape and motion of objects are counted, calculated, measured and observed. The basic elements of mathematics are: logic and intuition, analysis and reasoning, individuality and individuality.