Image And Preimage Of A Function Examples. The notation is the inverse t of s but this is equal to the pre image of s under t. To decide if this function is onto we need to determine if every element in the codomain has a preimage in the domain.
The preimage f 1 y of y is the set of all things in a that f sends into y. I m having a problem with setting the image of a function or interval of a function. Take any real number x in mathbb r choose a b 2x 0.
I m having a problem with setting the image of a function or interval of a function.
Therefore the function image of the above example is the values that are on the y axis for which the function exists. I m having a problem with setting the image of a function or interval of a function. So this is s. This is the pre image of s under t.