Function (Engelsk)
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Definition
A rule for changing numbers, for example, a function might be "add one and double".
Definition
Something which takes in one (or more) number and turns it into another number, according to some rule.
Definition
A function is a special relation which exists between each member of one set and just one member(its image) in a second set.
Functions are best illustrated by mapping diagrams.
The first set in each case is often called the domain of the function, while the second set is called the co-domain and the particular images used in this second set are called the range of the function.
Functions are best illustrated by mapping diagrams.
The first set in each case is often called the domain of the function, while the second set is called the co-domain and the particular images used in this second set are called the range of the function.
Definition
Given two sets A and B , a function f : A → B is a set f of ordered pairs (a,b) with a ∈ A and b ∈ B satisfying ∀a ∈ A( ∃(a,b) ∈ f and (a,c) ∈ f \implies b=c) . Write f(x) for the unique element satisfying (x,f(x)) ∈ f . Compare relation.
Relations
- bredere:
- (en) Algebraic object
- (en) Map
- smallere:
- (en) Absolute value
- (en) Ackerman's function
- (en) Algebraic function
- (en) Analytic function
- (en) Anharmonic function
- (en) Antilogarithm
- (en) Argument of a function
- (en) Automorphic function
- (en) Axiomatic probability
- (en) Bessel function of the first kind
- (en) Bessel function of the second kind
- (en) Bessel function of the third kind
- (en) Beta function
- (en) Ceil or ceiling function
- (en) Cepstrum
- (en) Cipher
- (en) Closure
- (en) Code
- (en) Complement
- (en) Complementary function
- (en) Composite function
- (en) Concave function
- (en) Conjugate functions
- (en) Constant function
- (en) Convex function
- (en) Convolution
- (en) Cumulative distribution function
- (en) Cumulative probability function
- (en) Diffeomorphism
- (en) Digital root
- (en) Elementary deformation
- (en) Elliptic function
- (en) Error function
- (en) Euler's phi function
- (en) Even function
- (en) Fejer kernel
- (en) Floor
- (en) Functor
- (en) Gamma function
- (en) Green's function
- (en) Gudermannian function
- (en) Hamiltonian
- (en) Hermitian
- (en) Homotopy
- (en) Hyperbolic function
- (en) Identity function
- (en) Indicator function
- (en) Integrating factor for a differential form
- (en) Intersection
- (en) Inverse function
- (en) Inverse gudermannian
- (en) Lagrangian
- (en) Legendre function
- (en) Measurable function
- (en) Metric
- (en) Modulo
- (en) Moment generating function
- (en) Morphism
- (en) Objective function
- (en) Odd function
- (en) Order
- (en) Permutation
- (en) Polynomial function
- (en) Potential
- (en) Probability density function
- (en) Probability function
- (en) Probability generating function
- (en) Rational function
- (en) Riemann zeta function
- (en) Sigma function
- (en) Signature
- (en) Signum function
- (en) Skew-Hermitian
- (en) Smooth function
- (en) Step function
- (en) Test function
- (en) Thrackle
- (en) Time dependent vector field
- (en) Transcendental function
- (en) Transformation
- (en) Trigonometric function
- (en) Union
- referencer:
- (en) Algebra
- (en) Codomain
- (en) Domain
- (en) One to one correspondence
- (en) Range of a function
- reference:
- (en) Category
- (en) Codomain
- (en) Extremum
- (en) Fourier transform
- (en) Fourier's theorem
- (en) Functional equation
- (en) Graph of a function
- (en) Intermediate value theorem
- (en) Interpolate
- (en) Mean of a function of a continuous random variable
- (en) Mean of a function of a random variable
- (en) minimum
- (en) Operator
- (en) Parameter
- (en) Property of function or process
- (en) Stationary point
- (en) Surface integral
- (en) Taylor's theorem
- (en) Tensor
- se også:
- (en) Relation
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