Chứng minh rằng ;
1/$p^2 \geq 3r^2+12rR$
2$p^2+5r^2 \geq 16R.r$
3/$8R^2 \geq p^2+r^2+2R.r$
Vài bài mới chế
Started By NAPOLE, 16-03-2007 - 09:43
#1
Posted 16-03-2007 - 09:43
Defense Of The Ancients
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