Hello forum! I was wondering if somebody knows of a fancy way of determining the Taylor series expansion of about without computing all the derivatives.
Determining the series does indeed require computing derivatives, which can appear fairly daunting at first. But after determining the first, second and third derivatives at x=1 you'll see that a simple pattern emerges: arctan(1)= 1/3 + 1/5 - 1/7 +1/9 -....