f(n)(-4) = (−1)^n *2^n * (n + 1)! (2*(-4) + 9)−(n+2) = (−2)^n* (n + 1)!.
Taylorformel hier ist:
$$T(x) = \sum \limits_{n=0}^{\infty}\frac{ f^{(n)}(-4)}{n!}(x+4)^n$$
$$T(x) = \sum \limits_{n=0}^{\infty}\frac{ (−2)^n \cdot (n + 1)! }{n!}(x+4)^n$$
$$T(x) = \sum \limits_{n=0}^{\infty} (−2)^n \cdot (n + 1)(x+4)^n$$