Which of the following is true about elements? a. atoms of all elements contain the same number of protons, but the number of neutrons is different for every element. b. atoms of all elements contain neutrons, but they do not all contain protons. c. atoms of all elements contain electrons, but they do not all contain protons. d. atoms of all elements contain protons, but the number of protons is different for every element.

we have been given a quadratic function and we need to restrict the domain such that it becomes a one to one function.

we know that vertex of this quadratic function occurs at (5,2).

further, we know that range of this function is .

if we restrict the domain of this function to either or , it will become one to one function.

let us know find its inverse.

upon interchanging x and y, we get:

let us now solve this function for y.

hence, the inverse function would be if we restrict the domain of original function to and the inverse function would be if we restrict the domain to .