\documentclass[14pt]{classPres}
\usepackage{tkz-fct}

\author{}
\title{}
\date{}

\begin{document}
\begin{frame}{Questions flashs}
    \begin{center}
        \vfill
        Terminale ST \\ Spé sti2d
        \vfill
        30 secondes par calcul
        \vfill
        \tiny \jobname
    \end{center}
\end{frame}

\begin{frame}{Calcul 1}
    \vfill
    Soit $f(x) = x^2$,

    \vfill
    Calculer la taux de variation entre x = -1 et x = 3.

    \vfill
    \[
        \frac{\Delta f}{\Delta x} = 
    \]
    \vfill
\end{frame}

\begin{frame}{Calcul 2}
    \vfill
    Soit
    \vfill
    \[
        f(x) = \cos(x)(5x+2)
    \]
    \vfill
    Calculer
    \vfill
    \[
        \frac{df}{dx} = 
    \]
    \vfill
\end{frame}

\begin{frame}{Calcul 3}
    \vfill
    Quelle est la valeur de $\sin(\vec{OI};\vec{OA})$?
    \vfill
    \begin{center}
        \begin{tikzpicture}[scale=3]
            \cercleTrigo
            \foreach \x in {0,30,...,360} {
                % dots at each point
                \filldraw[black] (\x:1cm) circle(0.6pt);
            }
            \draw (-30:1)  node [above right] {A}; 
            \draw (0,0) -- (-30:1);
            \draw[->, very thick, red] (0.5,0) arc (0:-30:0.5) ; 
        \end{tikzpicture}
    \end{center}
    \vfill
\end{frame}

\begin{frame}{Fin}
    \begin{center}
        On retourne son papier.
    \end{center}
\end{frame}


\end{document}