E
p
¾¾¾¾¾¾¾¾¾¾¾¾¾¾¾¾¾¾¾¾¾¾¾¾¾¾
+
—
q
1
= –1
r
0
q
1
q
2
E
p
= k
¾¾¾
r
q
2
=+1
r =
1
2
3
4
5
6
¥
