Give detailed Conception of : one-one Functions.
@nader1 @terenzreignz
A function f from A to B is called onto if for all b in B there is an a in A such that f (a) = b. All elements in B are used.
This is forcing me to review stuff ^.^ A one-to-one function is a function from a domain X to a co-domain Y such that for any two distinct elements a and b of X f(a) is not equal to f(b)
By definition, to determine if a function is ONTO, you need to know information about both set A and B. When working in the coordinate plane, the sets A and B may both become the Real numbers, stated as .
f:R>R
one-to-one, @nader1
it is one to one :)
Remember that a function is a set of ordered pairs in which no two ordered pairs that have the same first component have different second components. This means that given any x, there is only one y that can be paired with that x.
Thanks
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