Exemplar exercise problem VI — task. Mathematics CBSE, Class 10.

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Find the sum:

1. \(4-\frac{1}{n} + 4-\frac{2}{n} + 4-\frac{3}{n} + ... \) upto \(n\) terms

The sum of the terms \(=\)

\frac{i i - i}{i}

2. \(\frac{a-b}{a+b} + \frac{3a-2b}{a+b} + \frac{5a-3b}{a+b}+...\) upto \(11\) terms

The sum of the terms \(=\)

\frac{i (i i - i i)}{i + i}

[Note: Enter the coefficient and variable in separate answer box.]

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47. Exemplar exercise problem VI