Hey all. We never covered the Maclaurin series (covered Taylor) but these questions are on my review for my final.(adsbygoogle = window.adsbygoogle || []).push({});

1. The problem statement, all variables and given/known data

Compute the 9th derivative of:

arctan((x^3)/2) at x=0

f^9(0)=?

2. Relevant equations

Use the MacLaurin series for f(x)

3. The attempt at a solution

atan(x) =x-x^3/3 + x^5/5 +........

I have no idea where to even go from here.

I have a similar yet more difficult problem as well that I don't even no where to begin:

Compute the 6th derivative of:

(cos(6x^2)-1)/(x^2) at x=0

f^6(0)=?

Sorry my professor doesn't have office hours till next week and I'm just really frustrated with these!!

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# Homework Help: Maclaurin Series homework help

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