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1. |
What is the generating function for generating series 1, 2, 3, 4, 5, ? |
A. | ( frac{2}{(1-3x)} ) |
B. | ( frac{1}{(1+x)} ) |
C. | ( frac{1}{(1 x)^2} ) |
D. | ( frac{1}{(1-x2)} ) |
Answer» D. ( frac{1}{(1-x2)} ) | |