[ Diff(x[1], t) = (1*k[32]*(1 - k[25])*(k[1]*piecewise(t <= k[31], 1, 0) + k[2]) + (-1)*k[32]*k[3]*x[1])/k[32],
  Diff(x[2], t) = (1*k[32]*(1 - k[25])*(k[4]*piecewise(t <= k[31], 1, 0) + k[5]) + (-1)*k[32]*k[6]*x[4]*x[2]*(1 - k[26]) + (-1)*k[32]*k[7]*x[2])/k[32],
  Diff(x[3], t) = (1*k[32]*k[8]*piecewise(t <= k[31], 1, 0) + 1*k[32]*k[9] + (-1)*k[32]*k[10]*x[3])/k[32],
  Diff(x[4], t) = (1*k[32]*k[11]*piecewise(t <= k[31], 1, 0) + 1*k[32]*k[12] + (-1)*k[32]*k[13]*x[4])/k[32],
  Diff(x[5], t) = (1*k[32]*k[14]*piecewise(t <= k[31], 1, 0)*x[9] + 1*k[32]*piecewise(t <= k[31], 0, k[30])*(1 - piecewise(t <= k[31], 1, 0))*x[9] + (-1)*k[32]*k[16]*x[4]*(1 - k[26])*x[5] + (-1)*k[32]*k[17]*x[5] + (-1)*k[32]*k[18]*x[3]*x[5])/k[32],
  Diff(x[6], t) = (1*k[32]*k[18]*x[3]*x[5] + (-1)*k[32]*k[19]*x[4]*(1 - k[26])*x[6] + (-1)*k[32]*k[20]*x[6]*x[2])/k[32],
  Diff(x[7], t) = (1*k[32]*k[16]*x[4]*(1 - k[26])*x[5] + 1*k[32]*k[19]*x[4]*(1 - k[26])*x[6] + (-1)*k[32]*k[21]*x[7] + (-1)*k[32]*k[22]*x[1]^2*x[7])/k[32],
  Diff(x[8], t) = (1*k[32]*k[22]*x[1]^2*x[7] + (-1)*k[32]*k[23]*x[8])/k[32],
  Diff(x[9], t) = ((-1)*k[32]*k[14]*piecewise(t <= k[31], 1, 0)*x[9] + (-1)*k[32]*piecewise(t <= k[31], 0, k[30])*(1 - piecewise(t <= k[31], 1, 0))*x[9] + 1*k[32]*k[17]*x[5] + 1*k[32]*k[20]*x[6]*x[2] + 1*k[32]*k[21]*x[7] + 1*k[32]*k[23]*x[8])/k[32] ]