Electric field lines can never cross. what would crossed electric field lines indicate? a) a field pointing in two directions b) an attractive force on a charge c) a non uniform area of the field d) a place where the field strength is zero

Crossed electric field lines indicate A) a field pointing in two directions

the correct answer on E2020 is A.) a field pointing in two directions.

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 .