In Problems 1-4, find the terms through x5 in the Maclaurin series for f(x). It may be

Question:

In Problems 1-4, find the terms through x5 in the Maclaurin series for f(x). It may be easiest to use known Maclaurin series and then perform multiplications divisions, and so on. For example, tan x = (sin x) / (cos x)?
1. f(x) = tan x
2. f(x) = tanh x
3. f(x) = ex sin x
4. f(x) = e-x cos x