Basic Derivatives - Natural Log (with Rule) to Derivative

Question

Find the derivative f'(x).

$$\begin{array}{l} \displaystyle \text{if } f(x) = a\ln\left(x\right),\ f'(x) = \frac{a}{x} \[12pt] \displaystyle f(x) = -9\ln\left(x\right) \end{array}$$

Accepted Answer

$$f'(x) = -\frac{9}{x}$$

Answer

$$f'(x) = -\frac{9}{x^{2}}$$

Answer

$$f'(x) = \frac{1}{x}$$

Answer

$$f'(x) = -9x$$

Practice: Basic Derivatives - Natural Log (with Rule) to Derivative

On this page:

Practice:

Basic Derivatives - Natural Log (with Rule) to Derivative

Skills that use 'Basic Derivatives - Natural Log (with Rule) to Derivative'