Tuesday, 24 March 2015

sequences and series - Is sumii=0nfty(i)+c=sumik=0nfty(2k)+c+sumij=0nfty(2j+1)+c?



Basically, the question is, "is the sum of all positive numbers equal to the sum of all positive even numbers and odd numbers?" (which is obviously yes) but with a twist: for every number, there is a constant c which is also an integer.



i=0(i)+c=k=0(2k)+c+j=0(2j+1)+c




It really feels like this equation is true, as there should be an equal amount of c's in both sides but I am not a mathematician at all, just equipped with high school maths, I wanted a proper explanation for this from you guys! Couldn't find this question when googling, sorry in advance if there is one.


Answer



Note that the sum: 1+2+3+ diverges, so they sum to on both sides.


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