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2. Find the sum of the series (a) 6 (1-x)4 (b) Σn(n-1)-2 1 -2 (1-x)² (1-x)³ (c) (d) 2 (1-x)³ (e) 6 (1-x)¹
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2. Find the sum of the series (a) 6 (1-x)4 (b) Σn(n-1)-2 1 -2 (1-x)² (1-x)³ (c) (d) 2 (1-x)³ (e) 6 (1-x)¹
2. Find the sum of the series (a) 6 (1-x)4 (b) Σn(n-1)-2 1 -2 (1-x)² (1-x)³ (c) (d) 2 (1-x)³ (e) 6 (1-x)¹