The document discusses Maclaurin series expansions. It begins by stating the competencies of deriving and obtaining Maclaurin series for various functions. It then provides examples of using Maclaurin's theorem to expand the functions e^x and ln(1+x) in terms of powers of x. Another example expresses sin(17°11') in radians and approximates it using Maclaurin series. The document concludes by listing standard Maclaurin series expansions for common functions like e^x, sinx, cosx, and ln(1+x).