Find the intervals in which the function f given by `f(x)=x^2-4x+6` is (a) strictly increasing (b) strictly decreasing

Explanation

To solve the problem of finding the intervals in which the function \( f(x) = x^2 - 4x + 6 \) is strictly increasing or strictly decreasing, we will follow these steps:

### Step 1: Find the derivative of the function
The first step is to differentiate the function \( f(x) \).

\[ f'(x) = \frac{d}{dx}(x^2 - 4x + 6) \]
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