问题
解答题
计算:
|
答案
原式=
-(1 2
-1 2
)-(1 4
-1 4
)-…-(1 8
-1 512
)1 1024
=
-1 2
+1 2
-1 4
…+1 4 1 1024
=
+1 2 1 1024
=
.513 1024
计算:
|
原式=
-(1 2
-1 2
)-(1 4
-1 4
)-…-(1 8
-1 512
)1 1024
=
-1 2
+1 2
-1 4
…+1 4 1 1024
=
+1 2 1 1024
=
.513 1024