In the formula in the Formula Bar, shown above, you can see that curly brackets were automatically added at the start and end of the formula, because it was array-entered.
If you don't see those curly brackets, you pressed Enter, instead of Ctrl + Shift + Enter. To fix it, click somewhere in the formula bar, and press Ctrl + Shift + Enter.
Then, copy the formula down, to the rows below, to see the minumum for each of the products.