Taking the second derivative of \(\displaystyle x/(x+1)^{4}\)

for the first derivative I got

\(\displaystyle 1-3x/(x+1)^5\)

the second derivative I'm not sure about. Im not even sure I did the first one correctly.

thanks!

for the first derivative I got

\(\displaystyle 1-3x/(x+1)^5\)

the second derivative I'm not sure about. Im not even sure I did the first one correctly.

thanks!

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