"T " L, o d d a n d a n e v e n fu n c tio n of x fo r k e v e n , U p o n e x p a n d in g th e le ft sid e of (2 ,3 ) a n d e q u a tin g c o e ffic ie n ts in ss w e o b ta in th e e x p lic it fo rm u la k /2 /WolframAlpha brings expertlevel knowledge and capabilities to the broadest possible range of people—spanning all professions and education levels g''(x) = − e−x − (e−x − xe−x) ∴ g''(x) = − 2e−x xe−x Similarly the third derivative g(3)(x) = 2e−x e−x − xe−x ∴ g(3)(x) = 3e−x − xe−x So it looks like clear pattern is forming, but let us just check by looking at the fourth derivative; Peginterferon Lambda For The Treatment Of Outpatients With Covid 19 A Phase 2 Placebo Controlled Randomised Trial The Lancet Respiratory Medicine nEX[J[ ßè "L"O