In math lesson, my teacher told me that Euler once used a very delicate method to calculate Sn=n∑i=11i2 and wrote a paper about it.
I wonder how to calculate this. I need a precise answer, not the answer that it's less than a number such as 2.
In math lesson, my teacher told me that Euler once used a very delicate method to calculate Sn=n∑i=11i2 and wrote a paper about it.
I wonder how to calculate this. I need a precise answer, not the answer that it's less than a number such as 2.
I have injection f:A→B and I want to get bijection. Can I just resting codomain to f(A)? I know that every function i...
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