A student investigates how the angle of refraction varies with the angle of incidence when light enters a glass block describe how the students should preform this investigation

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b. lifting dumbbell weight at 20-degree angle from the body after a 45-degree angle

i will answer your question if you answer mine

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 .