solve second degree differential equation

hey guys,

i have a equation which is a second dgree differential equation i don't know how to solve this can anybody please help

dc/dt=D*d2c/dz2.

where c,t and z are variables.

initial condition c0=1

boundry conditions are:

at z=0, c=1
  and
at z=1, c=1/exp(t).

i have to plot a graph between c and t at z=1

can anyone tell me how to approach this.

t can be taken between 0 to 16000 with gaps of 2000.

Answer 1

[Torsten]

help pdepe

Best wishes

Torsten.