Does anyone know why 1 + 2 + 3 + 4 + 5 + 6 + 7 ...... forever.... is equal to -1/12?

Can someone explain this to me, my friend said it was true and I don't know why. I think it has to do with summation...

CalculatorUser Aug 30, 2019

#1**0 **

I know this one!

This sum is widely used in physics and many people argue about this, but I think that this video does a great job of explaining:

https://www.youtube.com/watch?v=w-I6XTVZXww

It's really good.

People argue about it because it's hard to imagine a sum like that to be negative.

This video is extremely convincing...

It has to do with summation, you are correct, and infinite series altering.

tommarvoloriddle Aug 30, 2019

#2**0 **

Tony in the video called it mathematical hocus pocus.

I call it mathematical BS ... and that don't stand for Britney Spears.

He did a lot of shuffling around of numbers and sums, sort of like the three shells and a pea.

Our first day in Algebra 1, our teacher - Mr Barker, if it matters - proved to the class that 1 = 2.

Our lesson from that was that you can't divide by zero, AND that you can't believe everything you see.

.

Guest Aug 30, 2019

#3**+2 **

Yes guest! I understand your explanation, I myself had shuffled around with numbers before, and I have found crazy proofs that are obviously not correct.

Although it is interesting to hear about this concept, I will keep in my mind the fact that these proofs can be wrong and shuffling around ain't gonna be the way to be sure.

CalculatorUser
Aug 30, 2019