Our football team Philadelphia Eagles plays in Lincoln Financial Field. It is an
investment insurance company that pays to have its name on the stadium. Ok, the
Philadelphia Phillies plays in citizen bank park. Citizen bank is a bank that pays the
right t
Sunway Lin
Electromagnetism
1
Sunway Lin
2
Sunway Lin
r
r r
B
=
t
r
r r r D
H = J +
t
r v
B = 0
v r
D =
v r
r
r r
(
E
)
d
a
=
B da
s
t s
r r
r r r r
v
D da
s( H ) da = s J da +
t
v v
( B)dv = 0
_
_
c
v
v
( D)dV = dV
v
r r
E
c dl = t
v v
o H dl
Recurrence Relations
(Dierence Equations)
c
2012
Prof. YuhDauh Lyuu, National Taiwan University
Page 504
Pure mathematics is the subject in which
we do not know what we are talking about,
or whether what we are saying is true.
Bertrand Russell (18721970
Method of Undetermined Coecients
Recall Eq. (77) on p. 547, repeated below:
Cn an + Cn1 an1 + + Cnk ank = f (n).
(81)
(h)
Let an denote the general solution of the associated
homogeneous relation (with f (n) = 0).
(p)
Let an denote a particular solutio
Bipolar Junction Transistor
1
Collector ()
BJT
Emitter ()
IC
IE
Base ()
Base ()
IB
IB
IE
IC
Emitter ()
npnN
()
IE = IB + IC
Collector ()
pnpP
2
1. EC ()
(active)
2. off
(cut off)
()
3. on
(saturation)
4. EC
3
()
E
N
B
C
+
()
P
N

( 0.99)
(WB, NB , NE
MATLAB
(Roger Jang)
jang@mirlab.org
http:/mirlab.org/jang
91
A i j A(i,
j)
MATLAB
i j Subscript Index
A(i, j) A(i+(j1)*m) m A
Quiz
Suppose that A is a 2dimensional
array of size mn.
Given A(i, j), how to find the linear index
y such that A(y)