find-F-n-1-or-F-n-x-n-1-2-3-F-n-x-1-x-3-n-dx-

Question Number 9482 by sou1618 last updated on 10/Dec/16

f i n d F_{n} (- 1) o r F_{n} (x) .

n = 1, 2, 3 \dots \dots

F_{n} (x) = \int {(1 + x^{3})}^{n} d x

Commented by sou1618 last updated on 10/Dec/16

You can't use 'macro parameter character #' in math mode

F_{n} (x) = \underset{k = 0}{\sum^{n}} \frac{1}{3 k + 1} x^{3 k + 1}_{n} C_{k} = ? ? ?

F_{n} (- 1) = - \underset{k = 0}{\sum^{n}} \frac{1}{3 k + 1} {(- 1)}^{k}_{n} C_{k} = ? ? ?

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