Small perturbations to a circular orbit

[samjohnny]

Homework Statement

Attached.

Homework Equations

The Attempt at a Solution

Hi. This question has me really puzzled; I simply don't know where to start with this one and thus am not sure of any relevant equations. It seems to be a problem about small perturbations to the circular orbit of a body. I'm not sure of a strategy to pursue. Any help?

Thanks

 

[RUber]

With small perturbations and exponentials, I normally see the Taylor expansion of the exponential used to show properties.