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A function is a mapping from one set - the domain - to another set - the codomain or range - such that each element in the domain is associated with one and only one element in the range.
The domain and codomain need not be different.
It is possible for several elements in the domain to be mapped onto the same element in the range ie a "many-to-one" mapping. However a "one-to-many" mapping not permitted. It may be possible to redefine the domain or range of a one-to-many mapping so that it is no longer is one-to-many and so becomes a function.
For example,
f(x) = x2 (for real x) is a perfectly legitimate many-to-one function. Both -2 and +2 are mapped to 4, but that is OK.
f(x) = sqrt(x) for x ≥ 0 is not a function because 4 can be mapped to -2 or +2. To avoid this, you can restrict the range to f(x) ≥ 0 or define f(x) = |sqrt(x)|.
What else can I help you with?
What is a range as a math term?
A range used as a math term means subtracting the highest value from the lowest value. the set of values that a given function can take as its argument varies.
What is a function change in math?
math
What is the math term for subset?
"Subset" IS the math term in this case.
What are the ways in describing a function?
A formula or graph are two ways to describe a math function. How a math function is described depends on the domain of the function or the complexity of the function.
What is a key concept in math?
"key concept" is not a mathematical term . A key concept is an important idea. Two key concepts in math are derivatives and integrals of functions. ( "function" is also a key concept.)
What is a range as a math term?
A range used as a math term means subtracting the highest value from the lowest value. the set of values that a given function can take as its argument varies.
What is the math term that means-the quantity whose value depends on that of another quantity or quantities?
function
Geta is a math function or string function?
GetA is a math function and not a string function.
What is a function change in math?
math
What is the math term for multiplcation?
The math term for multiplication is PRODUCT.
What is the math term for subset?
"Subset" IS the math term in this case.
What is a math term of running left to right?
there is no such math term
What are the ways in describing a function?
A formula or graph are two ways to describe a math function. How a math function is described depends on the domain of the function or the complexity of the function.
What are extremes in math?
the first or the last term of a proportion or series. a relative maximum or relative minimum value of a function in a given region.
Is the math term called square root or squared root?
It is the "square root." This is the opposite function (n1/2) of the square (n2).
What is a key concept in math?
"key concept" is not a mathematical term . A key concept is an important idea. Two key concepts in math are derivatives and integrals of functions. ( "function" is also a key concept.)
What is the definition for power in math term?
power in a math term is when you multiply the exponents
