no! look up the power series for sine again. the powers are not .

start by grouping like terms. for example, if the base is x, put those parts together, put the ones where the base is 2 together, etc. then use the ruleSo, I'm fine with getting to this point (finally). So when I do my ratio test to find my R, I start off ok, but then I don't know what/how I am supposed to cancel out terms to get to something I can actually take my limit at.

How in the world do I simplify this??????