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klimenkov
 4 years ago
Prove for a medal.
The sum of the first \(n\) terms of the arithmetic sequence \(1+2+3+\cdots+n\). Try to find as more proofs as you can.
klimenkov
 4 years ago
Prove for a medal. The sum of the first \(n\) terms of the arithmetic sequence \(1+2+3+\cdots+n\). Try to find as more proofs as you can.

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experimentX
 4 years ago
Best ResponseYou've already chosen the best response.0dw:1349108754795:dw

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0What statement is to be proved? That a sum exists?

experimentX
 4 years ago
Best ResponseYou've already chosen the best response.0dw:1349108832681:dw