anonymous
  • anonymous
Help please :) ? If f(x) = 2x2 (x + 1) then f ′(1) is equal to i get everything but 10 and 10 is the answer :)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
\[ f(x)= 2x^2(x+1) \]?
anonymous
  • anonymous
yes
Jack1
  • Jack1
If f(x) = 2x^2 times (x + 1) ...? so f(x) = 2x^2 (x + 1) = 2x^3 + 2x^2 so f'(x) = 6x^2 + 4x ... yeah?

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anonymous
  • anonymous
What is your work?
Jack1
  • Jack1
then sub in x = 1
Jack1
  • Jack1
... =10
anonymous
  • anonymous
i get what you did but is it okay if you explain the part after the so it equals like there is a 3 to the power of instead of a a 2 why did you change it? @Jack1
anonymous
  • anonymous
ohhhhhh ok thanks :)
Jack1
  • Jack1
cool, u got that all clear now?
Jack1
  • Jack1
sorry, on another q, too slow to come back
anonymous
  • anonymous
yes thanks :)
Jack1
  • Jack1
sáll good, happy trails ;D

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