0
• ;r <
g(x)h(y)/
H I J
• r
$
. /
2:
A
K
%
0
&
h(y) ! = > y = r ? @ dy/dx =
B C D E 0:F G y = r ! L 2:
dy/h(y) = g(x)dx ! " # ' ( y = r ) * + , - 1 23 4 5 6 ! 27 8 9
1
dy/dx = y24
(5)
4c1 c2 c
y
(6)
(5) 2
- 1
2
3
eycos x 1) ! " #
'(
2) )
* + ey,ye-y,e-y = 2cosx,c
$
%
"
3) - . / 0 x = 0, y = 0 5 ey,ye-y,e-y = 42cosx
sin2x = 2sinx cosx&
(7)
c = 41
2
3
4
(8)
3