Prove that the following functions do not have maxima or minima:(i) f (x) = `e ^x` (ii) `g(x) = log x`(iii) `h(x)=x^3+x^2+x+1`

Explanation

To prove that the given functions do not have maxima or minima, we will analyze each function by finding its derivative and determining its behavior.

### (i) Function: \( f(x) = e^x \)

1. **Find the derivative**:
\[ f'(x) = \frac{d}{dx}(e^x) = e^x \]
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