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2
onto a circular cylinder
2
Box 23.21 (Mapping paraboloid
P
C
1
: (i) conformal, (ii) equiareal,
(iii) equidistant, left principal stretches
Λ
1
,Λ
2
).
(i) conformal:
x
=
U
y=1
√
5+ln
1+
√
5
+
√
1+4
V
2
+ln
V
1+
√
1+4
V
2
−
Λ
1
=
Λ
2
=
1
V
(ii) equiareal:
x
=
U
√
1+4
V
2
12
+
1+4
V
2
1
y=
−
12
Λ
1
=
1
V
,Λ
2
=
V
(iii) equidistant:
x
=
U
y=
1
2
V
√
1+4
V
2
+
1
4
sinh
−
1
2
V
Λ
1
=
1
V
, Λ
2
=1
2
onto a circular cone
2
Box 23.22 (Mapping the paraboloid
P
C
0
:(i) conformal, (ii) equiareal,
(iii) equidistant, left principal stretches
Λ
1
,Λ
2
).
(i) conformal:
x
=(
1+
√
5
1+
√
1+4
V
2
exp
√
1+4
V
2
)
n
cos (
nU
)
V
exp
√
5
y
=(
1+
√
5
1+
√
1+4
V
2
exp
√
1+4
V
2
)
n
sin (
nU
)
V
exp
√
5
1+
√
5
exp
√
5
1+
√
1+4
V
2
exp
√
1+4
V
2
n
Λ
1
=
Λ
2
=
n
V
V
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