A pony weighed 313.3 kilograms in March, 348.2 kilograms in April, and 364.6 kilograms in May. How much weight did the pony gain
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In polar coordinates, we have
From this we can write
If
, then 
, so we get
From this we can write
If
Let the two required numbers be x and y, then x - y = 176, thus y = x - 176.
Let the product of the two numbers be represented by
For the product to be minimum,
Thus, y = 88 - 176 = -88
Therefore, the two numbers are 88 and -88.
Let the product of the two numbers be represented by
For the product to be minimum,
Thus, y = 88 - 176 = -88
Therefore, the two numbers are 88 and -88.