8.1. Supersums - JulTob/Analysis GitHub Wiki
Supersums
Altenating ones
+1 -1 +1 -1 +1 -1
+1 -1 +1 -1 +1 -1 +1 -1 +1 -1 +1 ...
=
1/2
--------------
S = +1 -1 +1+1-1+1 ...
+S = +1 -1+1+1-1+1 ...
2S = +1
S = 1/2
1 - S = 1 - (+1 -1 +1 ...) = 1 -1 +1 -1... = S
1 - S = S
1 = 2S
1/2 = S
Naturals Alternating
+1 -2 +3 -4 +5 -6 +7 -8 +9 ....
+1 -2 +3 -4 +5 -6 +7 -8 +9 ....
=
1/4
--------------
A = +1 -2 +3 -4 ...
+A = +1 -2 +3 +4 ...
2A = +1 -1 +1 -1 ....
2A = S
S = 1/2
A = 1/4
Naturals
+1 +2 +3 +4 +5 +6 +7 +8 +9
+1 +2 +3 +4 +5 +6 +7 +8 +9 ...
=
-1/12
--------------
N = +1 +2 +3 +4 ...
N-A = +1 +2 +3 +4 ...
-(+1 -2 +3 -4 ...)
N-A = 0 4 0 8 0 ...
= 4 ( +1 +2 +3 +4 ...)
= 4 N
-3N = A
= 1 / 4
N = - 1 / 12
Naturals Squared
+1² +2² +3² +4² +5² +6² +7² +8² +9² ...
+1 +4 +9 +16 +25 +36 ...
=
0
Naturals Thriced
+1³ +2³ +3³ +4³ +5³ +6³ +7³ +8³ +9³
+1 +4 +27 +64 +125 +216 ...
=
1/120