Mal allgemein
f(x) = e^x·(a·x^2 + b·x + c)
f'(x) = [e^x]'·(a·x^2 + b·x + c) + e^x·[(a·x^2 + b·x + c)]'
f'(x) = e^x·(a·x^2 + b·x + c) + e^x·(2·a·x + b)
f'(x) = e^x·(a·x^2 + b·x + c + 2·a·x + b)
f'(x) = e^x·(a·x^2 + (2·a + b)·x + (c + b))
f(x) = e^x·(4·x - 1)
f'(x) = e^x·(4·x - 1) + e^x·(4)
f'(x) = e^x·(4·x - 1 + 4)
f'(x) = e^x·(4·x + 3)
Willst du es jetzt selber probieren?