Assume the disc of uniformed rubber has equation of xx+yy
Transformation of a disc
所有跟帖:
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still the same shape, because it is simply moved. :)
-十四哥-
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11/20/2007 postreply
08:50:40
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Sorry. (0,-1) of the disc is fixed.
-yma16-
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11/20/2007 postreply
20:04:26