anonymous
  • anonymous
Find the derivative of f(x) = -(9/x) at x = -8. How would I solve this?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
\[-(\frac{ 9 }{ x })=-9x^{-1}\] Then use the power rule \[\frac{ d }{ dx }x^n=nx^{n-1}\]
UsukiDoll
  • UsukiDoll
either use quotient rule or the power rule
anonymous
  • anonymous
Thanks guys. I think I get it

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UsukiDoll
  • UsukiDoll
alright :)
anonymous
  • anonymous
Can you tell me if I have the correct answer?
UsukiDoll
  • UsukiDoll
sure.
anonymous
  • anonymous
8/9?
UsukiDoll
  • UsukiDoll
let me check.. I"m going to use power rule as @peachpi did
UsukiDoll
  • UsukiDoll
|dw:1437794741135:dw|
anonymous
  • anonymous
9/64
zzr0ck3r
  • zzr0ck3r
You mean find the derivative, not find the derivation. They are not the same thing :)
anonymous
  • anonymous
got you
UsukiDoll
  • UsukiDoll
yeah ... if x = - 8|dw:1437794817385:dw|
UsukiDoll
  • UsukiDoll
whoa @zzr0ck3r scared me there XD

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