title: Difference between 'calculating' and 'determining' time/space complexity?
body: <p>Based on some discussions I've read about complexities and algorithms, it seems that there's a difference between saying '<strong>calculating</strong> time/space complexity' and '<strong>determining</strong> time/space complexity'. </p>
  
  <p>What is the difference, if there is one?</p>
  
  <p>Does <strong>calculating</strong> time/space complexity mean getting the general big O value for the algorithm (Ex: O(n)) and does <strong>determining</strong> time/space complexity mean getting the exact function that models the time/space (Ex: O(n) = 5n + 6)?</p>