You can switch the polarity of the bar magnet by clicking on the button with the bar magnet and two semi-circular arrows on the bottom right. note how the positions of the north and south poles are switched every time you click on this button. drag the bar magnet from left to right through the top coil, then repeat the same process after switching the polarity of the magnet. what effect, if any, does switching the polarity have on the brightness of the bulb and the needle of the voltmeter?

15.3 cos 65 degrees trig

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 .

1 is a answer of a question