Hi dear participants,
as a newbie I've a question with my notebook: 
From the second differentiall (In[3] statement) equation I'd like to plot the solution of it into a graph (In[10] statement). For some reason this doesn't work. If I extract the solution and enter it as Out[11], then the plot works fine and it yields my result (Out[12] statement). What went wrong?
Your help is greatly appreciated! Best Regards, Ralf
