title: how to solve IVP using separable variable
body: <p>the question is:</p>
  
  <blockquote>
    <p>x dy/dx = 2y   ;  y(0)=0</p>
  </blockquote>
  
  <p>because when i solve this problem the integration constant 'c' gets zero... and i have to find its value in order to calculate a solution to given IVP</p>