Domain And Range In Discrete Mathematics

Does every function have a domain.

Domain and range in discrete mathematics. Relations are often represented using arrow charts connecting the domain and range elements. As such they are described by sets of ordered pairs x y the domain and range of these functions are described in brackets with each individual value listed. Discrete and continuous domains a discrete domain is a set of input values that consists of only certain numbers in an interval. If someone could explain this question in detail so i can do some revision on it i d be grateful.

Find the domain codomain and range. If you are still confused you might consider posting your question on our message board or reading another website s lesson on domain and range to get another point of view. The example given earlier in the lesson about the amount of rain each month is this kind of discrete domain. Integers from 1 to 5 2 1 0123456 a continuous domain is a set of input values that consists of all numbers in an interval.

Such as computability theory though perhaps not in the introductory discrete math courses. Domain range and codomain. Domain describes all the independent values in a function. In its simplest form the domain is all the values that go into a function and the range is all the values that come out.

Yes but in simpler mathematics we never notice this because the domain is assumed. A discrete domain can have a finite set of values that will work for the x. Endgroup hmakholm left over monica nov 14 13 at 19 58. Even though they are represented differently the above are the same function and the domain of the function is x 2 3 5 6 8 and the range is y 4 8 2 9 3 this is how you can defined the domain and range for discrete functions.

Discrete functions are derived from sets of data which have gaps in them. Range describes all the dependent values in a function. The domain is all the x values and the range is all the y values to give the domain and the range i just list the values without duplication. The domain of a function is all the possible input values for which the function is defined and the range is all possible output values.

In the relation above the domain is 2 4 11 21 the range is is 5 31 11 3. All numbers from 1 to 5 2 1 0123456 sometimes the set of points that represent the solutions of an equation are.