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10 cards from this deck
Technique for summing series using telescoping property
Many terms cancel out in a series
Break general term into form that can telescope
1r−1r+1\frac{1}{r} - \frac{1}{r+1}r1−r+11
1−1n+11 - \frac{1}{n+1}1−n+11
12(1r−1r+2)\frac{1}{2}\left(\frac{1}{r} - \frac{1}{r+2}\right)21(r1−r+21)
1k(1r−1r+k)\frac{1}{k}\left(\frac{1}{r} - \frac{1}{r+k}\right)k1(r1−r+k1)
First and last non-cancelled terms
Incorrect partial fraction decomposition
Omitting the last non-cancelled terms
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