f(x)=x(moka3ab)-x²+4x-3
f'(x)=3x²-2x+4
f'(x)=0
na7assbo l momayiz
dalta=-44
ya3ni makach 7oloul
icharat f'(x) moujaba
ya3ni f(x) motazayida tamaman
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g(x)=x(moka3ab)
g'(x)=3x² >0
ya3ni icharat g'(x) moujaba
w g(x)motazayida tamaman
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f(x) -g (x )=x(moka3ab)-x²+4x-3-x(moka3ab)
=-x²+4x-3
na7assbo l momayiz =4
nelgaw 2 7ouloul (1) w (3
ndiro jadwal l ichara w taghayorat
(men na9ess malanihaya tkoun l ichara saliba (cf)ta7t(cg
men 1l 3 moujaba...(cf)faw9(cg)
men 3 l +malanihaya saliba (cf)ta7t (cg)
bon courage netmena nkoun fedtek chwiya ^^rabi ywef9ek