Find the minimum and maximum values of the funciton `y=x^3-3x^2+6`. Also find the values of x at which these occur.

Explanation

To find the minimum and maximum values of the function \( y = x^3 - 3x^2 + 6 \), we will follow these steps:

### Step 1: Differentiate the function
We start by finding the first derivative of the function with respect to \( x \):
\[ \frac{dy}{dx} = 3x^2 - 6x \]

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