- #1
roeb
- 107
- 1
Homework Statement
Expand V(z + dz, t).
I have seen problems like this in both my EnM and semiconductor courses but it's bothering me because I don't understand how the Taylor series is being used in this case...
Homework Equations
The Attempt at a Solution
Taylor series: f(a) + f'(x-a) + ...
let f = V(z+dz, t)
Here is where I get stuck... I don't really know what to do
I guess the first term: V(z,t) makes sense
but the second term: dV(z,t)/dz delta(z) doesn't make any sense to me at all...
What the heck happens in the second term?