定义 a※b=a+2b/2b,则3※4※1/2=_.

问题描述:

定义 a※b=

a+2b
2b
,则3※4※
1
2
=______.

由题意得:
3※4※

1
2

=
3+2×4
2×4
1
2
=
11
8
1
2

=
11
8
+2×
1
2
1
2

=
11
8
+1

=2
3
8

故答案为:2
3
8