QUIZ

Question 1/18
Le tableau de variation de $f\left(x\right)=x^{2}+x-2$ est :
  \begin{array}{c|ccccccc} x & -\infty &\frac{1}{2}& +\infty \\ \hline f(x) & \nearrow &f(\frac{1}{2})& \searrow \end{array}
  \begin{array}{c|ccccccc} x & -\infty &1& +\infty \\ \hline f(x) & \searrow &f(1)& \nearrow \end{array}
  \begin{array}{c|ccccccc} x & -\infty &-\frac{1}{2}& +\infty \\ \hline f(x) & \nearrow &f(-\frac{1}{2})& \searrow \end{array}
  \begin{array}{c|ccccccc} x & -\infty &-\frac{1}{2}& +\infty \\ \hline f(x) & \searrow &f(-\frac{1}{2})& \nearrow \end{array}
  \begin{array}{c|ccccccc} x & -\infty &\frac{1}{2}& +\infty \\ \hline f(x) & \searrow &f(\frac{1}{2})& \nearrow \end{array}