Question
यदि $y = {a_0} + {a_1}x + {a_2}{x^2} + ..... + {a_n}{x^n},$ तब ${y_n} = $
${y_1} = {a_1} + 2{a_2}x + ...... + n{a_n}{x^{n - 1}}$
${y_2} = 2{a_2} + 6{a_3}x + ...... + n(n - 1){a_n}{x^{n - 2}}$
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${y_n} = n!{a_n}$.
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