Question 1 all of the following are possible sources of error in a scientific investigation except for a completing multiple trials during an experiment. b discovering new variables as the experiment proceeds. c not controlling all the variables in an experiment. d using the wrong equipment during the experiment.

The ansawer is C "not controlling all the variables in a experiment"

resonant frequency

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 .