UnitStep Function in ODE
- To: mathgroup at smc.vnet.net
- Subject: [mg47727] UnitStep Function in ODE
- From: Virgil Stokes <Virgil.Stokes at it.uu.se>
- Date: Sat, 24 Apr 2004 04:15:22 -0400 (EDT)
- Organization: Systems & Control
- Sender: owner-wri-mathgroup at wolfram.com
Why it this the following so hard for Mathematica 5.0.0
c[t] = 0.2*UnitStep[20 - t];
eqn = y'[t] == 10.0*c[t] - 0.01*y[t]
DSolve[{eqn, y[0] == y0}, y[t], t] // FullSimplify
--V. Stokes