Divide 16 into three natural numbers to make the product of these three numbers the largest, the largest is () Calculate by equation Urgent!

If x + y + Z = 16, l = XYZ, then l = XY (16-x-y) = 16xy-xxy-xyy; if we calculate the partial derivatives of L for X and y so that they are zero, then we get 16y-2xy-yy = 0; 16x-2xy-xx = 0; that is, 16-2x-y = 0; 16-2y-x = 0; obviously, x = y = 16 / 3; because X and y are integers, we have to take

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