Derivatives Functions
1. The problem is to find the derivatives (Ableitung) of the two given functions:
- $f(x) = 4x^3 - 2x + 1$
- $f(x) = \frac{1}{x^4}$
2. For the first function $f(x) = 4x^3 - 2x + 1$, apply the power rule to each term:
- Derivative of $4x^3$ is $4 \times 3x^{3-1} = 12x^2$
- Derivative of $-2x$ is $-2$
- Derivative of constant $1$ is $0$
So, $f'(x) = 12x^2 - 2$
3. For the second function $f(x) = \frac{1}{x^4}$, rewrite it as $f(x) = x^{-4}$ to use the power rule:
- Derivative is $-4x^{-5} = -\frac{4}{x^5}$
4. Final answers:
- $f'(x) = 12x^2 - 2$
- $f'(x) = -\frac{4}{x^5}$