The point B is 4 units away from the origin on a bearing of 210°. If b is the position vector of B, find the parametric equation of the line that has the same
direction as b and passes through A, whose position vector is a = 5i – 6j.​

f is prop to m1xm2 double m1 double force

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 .