This question Is from the Jacaranda 12 Methods Textbook, I'm really struggling to understand part d and e of the question and how to solve it. Any help would be appreciated

Consider the graph defined by the function F(x)= (x^2)(e^(1-x))

a. differentiate to find f(x)'

b. Determine the coordinates of stationary points

c. Sketch the function

d. The point P(k, f(k)) lies on the curve. Determine the gradient of the line joining Point P to the Origins O.

e. Hence determine the coordinates of any non-stationary point(s) on the curve where the tangent passes through the origin, and determine the equation of the tangent.