beginTableau(105) newLigneVariables(btex $ {x}$ etex); val(btex $-50$ etex);val(btex $-\frac{2}{3}$ etex); val(btex $-\frac{\sqrt{5}}{5}$ etex); val(btex $\frac{\sqrt{5}}{5}$ etex); val(btex $50$ etex); newLigneSignes(btex $\hbox{ Signe de }\atop{\displaystyle 3 x+2}$ etex); moins; valBarre(btex 0 etex);plus;barre; plus;barre;plus; newLigneSignes(btex $\hbox{ Signe de }\atop{\displaystyle 5 x^{2}-1}$ etex); plus;barre; plus; valBarre(btex 0 etex);moins;valBarre(btex 0 etex);plus; newLigneSignes(btex $\hbox{ Signe de }\atop{\displaystyle F(x)}$ etex); moins;valBarre(btex 0 etex); plus;valBarre(btex 0 etex);moins;valBarre(btex 0 etex);plus; endTableau;