title: Second order differential equation using C++ Boost odeint library
body: <p>Using boost c++ odeint library, is it possible to solve a second order differential equation defined as follows ?</p>
  
  <pre><code>m*x''[i] + x'[i] = K*\sum{j=1,N} sin(x[j] - x[i]), where i = 1,2,3..N.
  m = 1, K = 1
  </code></pre>
  
  <p>where initial value of x is an vector or array of N uniformly generated random numbers between 0 to 2*pi.
  I want to integrate above equation using runge_kutta stepper of odeint ?</p>
  
  <p>I can solve it by writing above eqn. in two first order differential equations, but
  then in that case how the odeint stepper's would be written or modified ? </p>