This is interesting

 

The above is so interesting.

If you take the sigma, the negative 1 term and n factorial common on the left hand side and add; basically n(2n -1) + n is 2n*n. Of course you cannot do this on infinite sigma. But the result on LHS is 2nsquared.

And the result on RHS is nsquared.

There is one on Ramanujan too. 1+2+3+4+ ........ upto infinity is -1/12. If you don't believe this, see Youtube.

Strange ways of infinity. Infinity is closer than you think. Just rotate about yourself and you are talking of infinity. And take a scale (however long) you are talking of finite.

Analysis of Infinite by Euler in two parts must be a great book. But then it is very costly and is unaffordable in general standard.

Have a great day, dear blog readers !!