Proving the Harmonic Series Sum Formula for Positive Integers | Math Proof

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SUMMARY

The harmonic series is defined as H_{n} = ∑_{i=1}^n (1/i). The discussion centers on proving the formula ∑_{j=1}^n H_{j} = (n+1)H_{n} - n for all positive integers. A specific example is provided with H_{5}, calculated as H_{5} = 1 + 1/2 + 1/3 + 1/4 + 1/5 = 137/60. The user initially misapplied the formula, leading to confusion, but upon correctly summing H1 through H5, the expected result aligns with the formula.

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James889
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Hai,

The harmonic series is given by: [tex]H_{n} = \sum_{i=1}^n \frac{1}{i}[/tex]

I need to prove that for all positive integers:
[tex]\sum_{j=1}^n H_{j} = (n+1)H_{n} -n[/tex]

So i have
[tex]H_{5} = 1 + \frac{1}{2} + \frac{1}{3} + \frac{1}{4} + \frac{1}{5} = \frac{137}{60}[/tex]

[tex]H_{5} \neq (5+1)*\frac{137}{60} -5[/tex]

Have i missed something here?

Please excuse my epic fail math skills...
 
Last edited:
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So for your H5 example what they want you to sum is

H1 + H2 + H3 + H4 + H5

When I did that I got what the problem tells you you will get
 

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