Students learning calculus should understand the importance of odd and even functions as it comes out all the time in Calculus AP exams.
The sine series is and odd function series and the cosine function is an even series. Students should remember the alternating signs when writing the sine series. Other notable series include the harmonic series. Looking at the equations and understanding which series it belongs to will help you save a lot of time in solving the problems. Log functions can be further evaluated with understanding of this odd and even series.