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10 questions from this quiz
Telescoping property
Partial fractions
1r−1r+1\frac{1}{r} - \frac{1}{r+1}r1−r+11
They cancel out
1−1n+11 - \frac{1}{n+1}1−n+11
12(1r−1r+2)\frac{1}{2}(\frac{1}{r} - \frac{1}{r+2})21(r1−r+21)
1k(1r−1r+k)\frac{1}{k}(\frac{1}{r} - \frac{1}{r+k})k1(r1−r+k1)
Omitting non-cancelled terms at the end
First and last non-cancelled terms
On a series that does not telescope
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