An engineer in india (standard household voltage = 220 volts) is designing a transformer for use on her
upcoming trip to canada (standard household voltage = 120 volts). if her input coil has 240 turns, how many
turns should her output coil have?

scientific laws are the result of testing theories and proving them to be facts.

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 .