Domain and Range We need to be able to state which values of x produce values for the function f(x) and the set of these values is called the domain. Using the example function shown above f:x → x2 + 3x − 2. This function produces solutions for any value of x. This means that x can be any real number - (in Further Maths there are such things as imaginary numbers!). This means we write that for, f:x → x2 + 3x − 2, x ∈ R (where R is the set of real numbers). The set of output solutions produced by the function is called the range of the function. Taking the example above, we have already noted that its minimum is at x = -17/4 Therefore all the output values of the function are greater than or equal to -17/4,
Posted on: Tue, 30 Jul 2013 18:44:12 +0000
Trending Topics
Recently Viewed Topics
© 2015