title: Calculus on C# Windows form VS2010
body: <p>I have a question for doing mathematics calculus integration.
  I'm just a beginner so sorry if i did not explain the question clearly and asking some noob question.</p>
  
  <p>Any recommend library to use or is there any others way to do integration? </p>
  
  <p>My Question is:</p>
  
  <pre><code>P=1/(SQRT 2*PI)∫(upper limit X, lower limit negative infinity)e^((-1/2t)^2) dt
  </code></pre>
  
  <p>i will have the <code>X</code> 
  But how am i going to code the integration in? </p>