1o
a
:
|
[
Lo
Then, -if this
=
R,
=
'
a
;
F
.
and
Ri
Lf €@.)mu
Lies
!
;
CO.) mix
greater
||
_
is
less
between
than
=
x
+ fk tacks ||
Ri
and
LC
|
oLV-va
-
|
|
ip is
Vo
=
;
where
|:
.
2p
Level
Yi- VU
,
ever
a
Vo"
a
general nerse
the
ray
(s
.
field.
level . Then, «f
Ly
j
"ta yh
|
Xp-Xe > F [ti
bill( Vp- Vi) + (Vp -Vj31) |
l
_
where
I
!
.
on
.
}
|
Viti - VS
.
DF
RA,
for
this
particelar
.\
( Vp" V5: ) 7m
Use
Rove
VY eurve
find
V's
fer
-
am
Vsec9
to
|
TE p
Xser 7 X7 =Chyer- hj) cot Ojn 2 Ch jain hy) Wie
:
r
ray.
3
|
17)
4
Wie Fe VS
.
_
is
.
horizontal :
y= Pol
Xp-Xe
,
4
j represent the jth
where
I
|
[c)
a
:
|
2 {
Cases:
subscript
The
feeesed
2 TS,[
.
COe)nin Ya | }
2
focusing
gives
Let
Ka ,
the
2
V3- Va
complicated
For
2d:
a
“V3
Vi- Ve
}
i
|
Vv;
cos
Vi- Vo
This
“V3 :
hi tan (66) min - | + Arrh, Ip (0) mix 1]
|
|
Cos
.
Rs = 2Vo
{
Chan
;
boundaries
qive
=
Lo
_
is
- |
,enevay
p
4“
=Vos¢¢9o
Level
ray.
( from
LLNE
+))
:
st}
i
|
a “I
30— -