title: How to solve exponential equation in python?
body: <pre class="lang-py prettyprint-override"><code>from sympy import solve, symbols
  from math import e
  
  a = symbols('a')
  r = solve(1604+14*a**(-1)-14x1604*(1-e**(-1604*a))**-1, a)
  print(r)
  </code></pre>
  <p>When i try to solve this equation ,the programme seems keep running (for 4 hours) with no solution. anyone can help?</p>