Question: pls with steps and explain ^_^ Find a simple formula for sigma^n_k = 1 (2k - 1). Show that sigma^infinity_k = 0 k^2 x^k =

pls with steps and explain ^_^

pls with steps and explain ^_^ Find a simple formula for sigma^n_k

Find a simple formula for sigma^n_k = 1 (2k - 1). Show that sigma^infinity_k = 0 k^2 x^k = x(1 + x)/(1 - x)^3 for |x|

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