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[知識] 有冇數學高手係到=.=(中4)

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原帖由 ShingChung22 於 2011-12-12 19:55 發表
1. Let r1 and r2 be the two real roots of the eqyation (x-2006)(x-2007)=2007. if r is the smaller real root of the equation (x-r1)(x-r2) = -2007,find the value of r.

2.the area of the largest rectang ...
equation

無紙筆係手唔想做, d題目好易~

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原帖由 ★MR 於 2011-12-13 19:00 發表
2.the area of the largest rectangle with perimeter 1 metre is b square metre,find the value of b
1咩先得嫁- -cm定係m...
明了嗎/?~~~~~~~~``

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