问题
填空题
观察下列计算:
|
答案
+1
+2 1
+1
+3 2
+…+1
+4 3 1
+2011 2010
=
-1+2
-3
+2
-4
+…+3
-2011 2010
=
-1,2011
故答案为:
-1.2011
观察下列计算:
|
+1
+2 1
+1
+3 2
+…+1
+4 3 1
+2011 2010
=
-1+2
-3
+2
-4
+…+3
-2011 2010
=
-1,2011
故答案为:
-1.2011