Calculate the Lagrange polynomial P 2 (x) for the values (1.00) = 1.0000, (1.02) = 0.9888, (1.04)

Calculate the Lagrange polynomial P₂(x) for the values Г(1.00) = 1.0000, Г(1.02) = 0.9888, Г(1.04) = 0.9784 of the gamma function [(24) in App. A3.1] and from it approximations of Г(1.01) and Г(1.03).