Programming ... head hurts

I just got a head ache on this xdd I can't understand that Taylor series thing!

I don't even know what Taylor series is. =.=

 I've been studying this for almost 5 hours already for the fact that I have no idea about calculus!

Right now this is my current program. The 3rd row is still wrong =.=.

The output program should be shown like this:



Right now im watching:

I dont even know derivatives etc haha

So you guys, better to study! this is harder than programming haha xd

-kuruchi~