Find a power series representation for the function. (Give your power series representation centered at x=0.) f(x)= 13x 2
+1
x
​
∑ n=0
[infinity]
​
(−1) n
13 n
x 2n+1
∑ n=0
[infinity]
​
(−1) n
13 n
x 2n
13∑ n=0
[infinity]
​
(−1) n
x 2n+1
∑ n=0
[infinity]
​
(−1) n
13 n+1
x n+1
∑ n=0
[infinity]
​
(−1) n
13 n
x 2n+1
​
​