anonymous
  • anonymous
y'' for y= (x^2+9)^4
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
\[8(x^2+9)^3+48x(x^2+9)^2\]
anonymous
  • anonymous
awesome thank you
anonymous
  • anonymous
could you show me y' for this so i can see how you got y''

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anonymous
  • anonymous
\[8x(x^2+9)^3\]
anonymous
  • anonymous
thank you
anonymous
  • anonymous
No Problem
anonymous
  • anonymous
could you help me on another?
anonymous
  • anonymous
Sure
anonymous
  • anonymous
y'' for y= ln x/x^2
anonymous
  • anonymous
I am horrible when it come to ln in problems
anonymous
  • anonymous
\[-3x^(-4)+6lnx(x^(-4))+4x^(-4)\]
anonymous
  • anonymous
ooops
anonymous
  • anonymous
ha ha ha
anonymous
  • anonymous
-3x^(-4)+6x^(-4)lnx+4x^(-4)
anonymous
  • anonymous
could you show me how to do this?
anonymous
  • anonymous
\[y=lnx(x^{-2})\] Then you use product rule
anonymous
  • anonymous
okay..so then thats how you got the final answer
anonymous
  • anonymous
y' = x^(-3)-2x^(-3)lnx
anonymous
  • anonymous
and then you differentiate it again? do u know how to do that?
anonymous
  • anonymous
yes then you get....
anonymous
  • anonymous
-3x^(-4)+6x^(-4)lnx+4x^(-4)
anonymous
  • anonymous
-3x^-4 + 6x^-4 lnx ?
anonymous
  • anonymous
remember to use product rule for x^(-3)lnx
anonymous
  • anonymous
where are you getting the last part?
anonymous
  • anonymous
you forgot to use product rule for lnx(x^(-3))
anonymous
  • anonymous
oh okay now im with you. thanks
anonymous
  • anonymous
welcome

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