# Functions expressed as power series

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##### Examples

###### Lessons

**Expressing Functions as Power Series**

Express the following functions as power series, and then find the interval of convergence:**Irregular Function expressed as a Power Series**

Express the function $f(x)=ln(7-x)$ as a power series and find the interval of convergence.

**Derivative of a Function expressed as a Power Series**

Express the derivative of this function $f(x)=\frac{1}{1-x}$ as a power series and find the interval of convergence.