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 Find a power series for the function 99+x2 centered at 0\text { Find a power series for the function } \frac { 9 } { 9 + x ^ { 2 } } \text { centered at } 0 \text {. }

Question 89

Multiple Choice

 Find a power series for the function 99+x2 centered at 0\text { Find a power series for the function } \frac { 9 } { 9 + x ^ { 2 } } \text { centered at } 0 \text {. }


A) n=0(1) nxn+19n\sum _ { n = 0 } ^ { \infty } \frac { ( - 1 ) ^ { n } x ^ { n + 1 } } { 9 ^ { n } }
B) n=0(1) nxn9n\sum _ { n = 0 } ^ { \infty } \frac { ( - 1 ) ^ { n } x ^ { n } } { 9 ^ { n } }
C) n=0(1) nx2n9n\sum _ { n = 0 } ^ { \infty } \frac { ( - 1 ) ^ { n } x ^ { 2 n } } { 9 ^ { n } }
D) n=0(1) nx2n+19n\sum _ { n = 0 } ^ { \infty } \frac { ( - 1 ) ^ { n } x ^ { 2 n + 1 } } { 9 ^ { n } }
E) n=0(1) nx2n9n+1\sum _ { n = 0 } ^ { \infty } \frac { ( - 1 ) ^ { n } x ^ { 2 n } } { 9 ^ { n + 1 } }

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