Name: pendulum Independent Variable: t Constants: {} Values: {} Parameters: {g,b,L,m} Default values: {9.81,0.0,1.0,1.0} Variables: {theta,v} DefaultICs: {-0.01+Pi,0.0} DefaultHistory: {0,0} Expressions: Expressions (equation list): {} Vector field: v -sin(theta)*L^(-1)*g-b*L^(-2)*v*m^(-1) Functions: energy=1/2*L^2*v^2*m-L*cos(theta)*m*g IsDelay: false HasNonconstantDelay: false IsAutonomous: true HasPi: true