series

[lofty drift]

can someone help me on these questions please

[weary vault]

Do u need help with partial fractions or finding the sums?

[weary vault]

Q2. Look what happens when i start listing the first few terms of the sum

$$\sum_{r=1}^{n} (\frac{1}{2r(r+1)}-\frac{1}{2(r+1)(r+2)}) = (\frac{1}{2×1×2} - \frac{1}{2×2×3}) + (\frac{1}{2×2×3} - \frac{1}{2×3×4}) + (\frac{1}{2×3×4} - \frac{1}{2×4×5}) + (\frac{1}{2×4×5} - \frac{1}{2×5×6}) + ...$$

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[mighty lodge]

Arizus

[lofty drift]

Finding the sum