Solving nonlinear differential equations
- To: mathgroup at christensen.cybernetics.net
- Subject: [mg896] Solving nonlinear differential equations
- From: mdc111 at psu.edu (Marci Mouer)
- Date: Fri, 28 Apr 1995 00:53:57 -0400
I have been trying to find the symbolic solutions to a set of 6 differential equations using DSolve. The 6 equations are listed below: x1'[t] == x2[t] x2'[t] == g*((R*Cos[x5[t]])-x1[t])/L x3'[t] == x4[t] x4'[t] == g*((R*Sin[x5[t]])-x3[t])/L x5'[t] == x6[t] x6'[t] == u+(m*g*R*((x3[t]*Cos[x5[t]])-(x1[t]*Sin[x5[t]]))/(J1*L)) When I try to get the solution, Mathematica simply restates my problem. From some quick experiments, I believe that the source of the problem is from taking Sin[x5[t]] and Cos[x5[t]] instead of the independent variable t. Is there some way to get around this? (In case it matters, I am running a version 2.1.) Any help would be appreciated. Marci Mouer