# Cauchy's formula

## Homework Statement

specialize cauchy's formula to the case when z is the center of the circle and show that

f(z) = (1/2$$\pi$$)$$\int$$ f(z + re^(it)) dt
integral limits are 0 to 2$$\pi$$

## Homework Equations

cauchy's formula
f(z) = (1/i2*pi) $$\int$$ f($$\zeta$$)/($$\xi$$ - z) d$$\zeta$$

it is 2*pi not 2^pi just to be sure

## The Attempt at a Solution

i have no idea how to do this
any input or hints would be appreciated