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Fill each box of the magic square, with a number such that the number adds up to 18 horizontally, vertically and diagonally? #[(, ,5), (,8 ,), (, ,9)]#

Answer 1

The constraints are incompatible, resulting in no solution.

Fill in one digit at a time to try to find a way to meet the constraints:

#[[?, ?, 5], [?, 8, ?], [?, ?, 9]] ->[[1, ?, 5], [?, 8, ?], [?, ?, 9]] ->[[1, 12, 5], [?, 8, ?], [?, ?, 9]]# #->[[1, 12, 5], [?, 8, 4], [?, ?, 9]]->[[1, 12, 5], [6, 8, 4], [?, ?, 9]] ->[[1, 12, 5], [6, 8, 4], [11, ?, 9]]# # ->[[1, 12, color(red)(5)], [6, color(red)(8), 4], [color(red)(11), -2, 9]]#

The back diagonal does not add up, but the rows, columns, and one of the diagonals do.

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Answer 2

Jeremiah Andrews

[(4, 8, 5), (3, 8, 7), (6, 8, 4)]

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.