- #1
Maxo
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Homework Statement
By using the general equation for an arithmetic series, find a formula for calculating the series
[tex]1+3+5+...+(2n-1)[/tex]
Homework Equations
General equation for an arithmetic series:
[tex]\sum ^{n}_{k=1}k=\frac{n(n+1)}{2}[/tex]
The Attempt at a Solution
Using the general equation we have
[tex]\sum ^{n}_{k=1}(2k-1)[/tex]
but how can we go from there? What is the next step?
I tried replacing n with (2k-1) in the general equation but that gives the wrong answer. So how can we do it?
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