Tuesday, 18 June 2013

calculus - Summation of n-squared, cubed, etc.

How do you in general derive a formula for summation of n-squared, n-cubed, etc...? Clear explanation with reference would be great.

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real analysis - How to find limhrightarrow0fracsin(ha)h

How to find limh0sin(ha)h without lhopital rule? I know when I use lhopital I easy get $$ \lim_{h\rightarrow 0}...