F(-2,1)=-3,F(8,-3)=-23. NO SOLUTION.WRONG Q.
THANKS,PLESE TRY THIS;XX+4XY+YY=69,NO SOLUTION.
所有跟帖:
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Here is another more direct proof so that you can check the prob
-aisanguo-
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03/11/2012 postreply
19:56:30
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I'M WRONG,YOU ALSO WRONG.I'LL DO IT BY PEN TOMORROW.
-jinjing-
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03/11/2012 postreply
20:40:24
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Thanks for pointing it out. It seems just a typo.
-AiSanGuo-
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03/11/2012 postreply
21:50:35
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Sorry, there is a typo: u should be a*c-b*d
-AiSanGuo-
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03/11/2012 postreply
21:13:05
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F(2,5)=69 or F(-2,-5)=69, I think the Q is right.
-万斤油-
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03/11/2012 postreply
20:03:06