问题
填空题
计算:
|
答案
+1
+1 3
+1
+3 5
+…+1
+5 7 1
+119 121
=
(1 2
-1)+3
(1 2
-5
)+3
(1 2
-7
)+…+5
(1 2
-121
)119
=
(1 2
-1)=5.121
计算:
|
+1
+1 3
+1
+3 5
+…+1
+5 7 1
+119 121
=
(1 2
-1)+3
(1 2
-5
)+3
(1 2
-7
)+…+5
(1 2
-121
)119
=
(1 2
-1)=5.121