Chapter 2 The Particle in a Box s2. 1 Differential Equations Linear n(x)y)+A-1(x)y3+-…+A4y=g(x) order V(x g(x)=0: homogeneous(齐次) g(x)#0: inhomogeneous y+P(xr)y+o(x)=0 Independent y=C1V1+C2y2 n-th order c> n constants boundary conditions