Three identical charges (q= +5.0 mC) are along a circle with a radius of 2.0 m at angles of 30° , 150°, and 270°, as shown in the figure below.
What is the resultant electric field at the center in N/C?

power out to power in less than 100%

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 .

conduct current i mean it makes sense