Hint: 6cos(7π + x) = -6cos(x).
How do I go about solving this?
Find the Taylor series for f(x) centered at the given value of a. [Assume that f has a power series expansion. Do not show that R(x) → 0.] f(x) = 6 cos x, a = 7π
f(x) =
Find the associated radius of convergence R.
R =