Question

can any one help to explain how express functions as a power series?

Answer 1

A power series is expressed in summation notation:\[\sum_{0}^{\infty} a _{n}\]
Above is an example of how a power series is expressed...
Now, in order to make it fit this description, you have to recognize a pattern in your function. For example, the sequence {1,2,4,8,16,32} always increases by a multiple of 2. Therefore, you can make this sum:
\[\sum_{0}^{5} 2^{n}\]
If you have anymore questions, ask away!

Answer 2

how would you take a function, such as 1/2+x, and represent it as a power series?

Answer 3

how would you take a function, such as 1/2+x, and represent it as a power series?

Answer 4

2+x in denominator?

Answer 5

yes. sorry. 1/(2+x)