
Finding branches where general solution is possible
Posted:
Oct 16, 2013 4:46 AM


For following function with period 2 Pi in which branches is it possible to get a general solution?
Regards Narasimham
DSolve[{si''[th] Tan[si[th]]==(1+si'[th]) (1+2si'[th]),si[0]==Pi/4 },si,th] NDSolve[{si''[th] Tan[si[th]]==(1+si'[th]) (1+2si'[th]),si'[0]==0,si[0]==Pi/4},si,{th,0,6Pi}]; SI[u_]=si[u]/.First[%];Plot[SI[th],{th,0,6Pi}]
DSolve::bvnul: For some branches of the general solution, the given boundary conditions lead to an empty solution.>>

