Technician A says that the current flow through a rear-window defogger can be often self-regulating. Technician B says that as the temperature of the grid decreases, its resistance decreases, reducing current flow. Which technician is correct

Technician A is correct

Explanation:

Technician B is wrong because decrease in resistance will surely cause increase in the flow of current.

As temperature rises, the number of phonons increases and with it the likelihood that the electrons and phonons will collide. Thus when temperature goes up, resistance 

goes up. For some materials, resistivity is a linear function of temperature. The resistivity of a conductor increases with temperature.

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 .

that the claims meet official rules.

don't misinterpret the claims