Consider a company that combines two factors according to the production function: f(x₁ ; x₂) = (x₁* x₂) / (1+x₂)

a) It shows that the production plan that uses 2 units of the first input,1 unit of input 2, and produces 1 output unit, is feasible according to this technology.

b) It gives an example of a production plan that is inefficient and another that is not feasible.

c) Calculates and draws the middle and marginal product of factor 1.

d) Draw the isotelles map on the plane.

I can't solve it ! :(