# Difficult differential equation

1. Nov 13, 2014

### TheTank

1. The problem statement, all variables and given/known data
I used Lagrange to solve a problem and ended up with two differential equations

2. Relevant equations
$$m_2x''+(k-m_2 {\theta '}^2)x=k(L_o+L_2/2)+m_2 g cos{\theta}$$

and

$$(I_1 +1_2 +m_2 x^2) {\theta}'' +2m_2 \cdot x \cdot x' \theta ' +(m_1 L_1/2 +m_2 x)g sin\theta =0$$

3. The attempt at a solution
I have no idea of how to proceed now.. It doesn't seem that Wolfram Alpha can solve for two differential equations..
Any help at all will be appreciated!

2. Nov 14, 2014

### Orodruin

Staff Emeritus
I suggest you post the full problem rather than simply referring to the stage of the problem you have reached. That way we will know more about where you are and where you want to get to. Without the full problem statement it becomes much more difficult to help you.