f'(x) = e2·x·(1/2·x2 + 1/2·x - 1)
Ableitung nach Produkt- und Kettenregel
f''(x) = 2·e2·x·(1/2·x2 + 1/2·x - 1) + e2·x·(x + 1/2)
Ausklammern
f''(x) = e2·x·(x2 + x - 2) + e2·x·(x + 1/2)
f''(x) = e2·x·(x2 + x - 2 + x + 1/2)
f''(x) = e2·x·(x2 + 2·x - 3/2)