-51+40[x]>=0, so that [x]>=2
If [x]=2:
x^2=7.25, so x=2.69
回複:美國奧賽題:一元二次方程(2.5星)
所有跟帖:
• 回複:回複:美國奧賽題:一元二次方程(2.5星) -yma16- ♂ (42 bytes) () 04/09/2009 postreply 21:21:56
-51+40[x]>=0, so that [x]>=2
If [x]=2:
x^2=7.25, so x=2.69
• 回複:回複:美國奧賽題:一元二次方程(2.5星) -yma16- ♂ (42 bytes) () 04/09/2009 postreply 21:21:56
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