dérivation

na3tabir dalatayn f et g almo3arafatayn bima yali
f(x)=p(p-a)(p-x)(x+a-p)
g(x)=1/4p (p-x)x²
a et b 3adadan ha9i9ian bihayte 0<a<2/3p
1)odros ratabat dala f 3ala [0,p-a/2]
- istantij anaho mahma yakon x min [0,p-a/2] fa ina f(x)<=g(a)
2)odros ratabat dala g 3ala [0,2/3p]
-istantij ana likoli min [0,p-a/2] f(x)<=g(2/3p)
li yakon ABC motalatan et S misahatoh et 2p mohitoh
1)bayn ana S<=v3/9p²?
2)mata yakon tasawi?

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bonne chance

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