title: double integral in R
body: <p>I'm wondering how to code that takes double integrals in R. I already referred two similar questions.</p>
  
  <p><a href="https://stackoverflow.com/questions/8913603/calculating-double-integrals-in-r-quickly">calculating double integrals in R quickly</a></p>
  
  <p><a href="https://stackoverflow.com/questions/23901682/double-integration-in-r-with-additional-argument?noredirect=1">double integration in R with additional argument</a></p>
  
  <p>But I'm still confused how I can get my question from those answers. My question is following.</p>
  
  <p>I would like to code this calculations in R.</p>
  
  <p><a href="https://i.stack.imgur.com/ygZ5V.png" rel="noreferrer"><img src="https://i.stack.imgur.com/ygZ5V.png" alt="enter image description here"></a></p>
  
  <p>From my hand and Wolfram alpha calculation, it becomes 16826.4. I know how to take a integral if both integrals are from exact numbers using adaptIntegrate(). But I'm not sure how to do in my case. Could you guys help me? Thank you so much in advance.</p>