Show that the function `f(x)=4x^3-18 x^2+27 x-7` has neither maxima nor minima.

Explanation

To show that the function \( f(x) = 4x^3 - 18x^2 + 27x - 7 \) has neither maxima nor minima, we will follow these steps:

### Step 1: Find the first derivative of the function
We start by differentiating the function \( f(x) \).

\[ f'(x) = \frac{d}{dx}(4x^3 - 18x^2 + 27x - 7) \]
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