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\begin{frame}
  \frametitle{Indefinite Integrals}

  \begin{exampleblock}{}
    Evaluate
    \begin{talign}
      \int_0^3 (x^3 - 6x)dx
      &= \mpause[1]{ (\frac{1}{4}x^4 - 3x^2)\Big]_0^3 } \\
      \mpause{&= (\frac{1}{4}3^4 - 3\cdot 3^2) - (\frac{1}{4}0^4 - 3\cdot 0^2) } \\
      \mpause{&= \frac{81}{4} - 27 }
    \end{talign}
  \end{exampleblock}  
  \pause\pause\pause\pause
  
  \begin{exampleblock}{}
    Evaluate
    \begin{talign}
      \int_1^9 \frac{2t^2 + t^2\sqrt{t} -1}{t^2}dt
      &= \mpause[1]{ \int_1^9 (2 + \sqrt{t} -\frac{1}{t^2})dt } \\