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5Â¥2011-05-18 18:01:27
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ÓàÔó³É(½ð±Ò+2, ³ÌÐòÇ¿Ìû+1): лл²ÎÓëÓ¦Öú£¡ 2011-05-18 17:03:22
adayaday(½ð±Ò+3): 2011-05-19 22:30:05
adayaday(½ð±Ò+2): 2011-05-19 22:30:20
CODE:
In[1]:= FindMaximum[{-x - y,
  x + 2 y >= 3 && x >= 0 && y >= 0 && y \[Element] Integers}, {x, y}]

Out[1]= {-2., {x -> 1., y -> 1}}

In[1]:= NMaximize[{x^2 - (y - 1)^2, x^2 + y^2 <= 4}, {x, y}]

Out[1]= {3.5, {x -> 1.93649, y -> 0.5}}

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2Â¥2011-05-18 08:46:43
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ÓàÔó³É(½ð±Ò+1): лл²ÎÓëÓ¦Öú£¡ 2011-05-18 17:03:33
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CODE:
In[2]:= NMaximize[{x, x^2 + y^2 <= 4}, {x, y}]

Out[2]= {2., {x -> 2., y -> -1.95654*10^-10}}

3Â¥2011-05-18 08:50:04
ÒÑÔÄ   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

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4Â¥2011-05-18 17:35:54
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