title: Increase length of vertical bar
body: <p>How can I increase the length of vertical bar in the following? </p>
  
  <pre><code>\[M=\frac{e^{4}}{2k_1}\Big{\{}-(1+t)\left|_{-1}^0\right.+(1-2t)\left|_{0}^1 \right. \Big{\}}\]
  </code></pre>