How can I find the distribution and density in closed form of the severity model of losses for the sum of n-losses when α = 0.5 and β = 1 (Levy)? Could someone explain to me how to calculate closed forms in general because I do not understand the concept? X_i(t) ∼ S_α(β, γ, δ; 0)

2 |3x'e?" dx +5xr'e?" dy C:boundary of the region lying between the squares with vertices (1,1), (-1,1),(-1,-1) and (1,-1) and (3,3), (-3,3), (-3, -3), аnd (3,-3)

New Question: Is it possible to clarify the following Bartleby Expert Answer, with any Signs (/, *, +,-) and/or Positions (^, XY, Xy) that may be helpful? Thank you! (Original Question is also provided). Original Question: 2. A small oil company considers the continuous pumping of oil from a well as a continuous income stream, f(t) = 600e-0.2: in thousands of dollars per year. (a) (10) Find an estimate of the total income from this well over the next 10 years.

Examine f(x,y) =  x3 - 3xy + y3 + 5 for extrema & saddle points