anonymous
  • anonymous
Find the inverse of the function. f(x) = the cube root of quantity x divided by eight. - 4
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
|dw:1377664059893:dw|
anonymous
  • anonymous
This is my answer f-1(x) = 8(x + 4)^3 , I just need to verify.
anonymous
  • anonymous
actually, the answer is \[f^-1(x)=\frac{ 2 }{ \sqrt[3]{x} -8 }\]

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anonymous
  • anonymous
sorry it took so long for me to respond, still getting used to the equation writer system
anonymous
  • anonymous
It's okay, but that is not one of my options.
anonymous
  • anonymous
f-1(x) = [8(x + 4)]3 f-1(x) = 8(x + 4)3 f-1(x) = 8(x3 + 4) f-1(x) = 24(x + 4)
anonymous
  • anonymous
anyway, the easy way for you to check your answer is to take the equation and put it under 1, like this: \[\frac{ 1 }{ \sqrt[3]{x/8} -4 }\]
anonymous
  • anonymous
I understand, it's just that your answer does not compare to the options at all.
anonymous
  • anonymous
yes, i noticed, but all of those answers are easily proved incorrect simply by giving x a value and working the equation out from there
anonymous
  • anonymous
i tested this 3 times, i made x = 4 then i tried x = 25 then i tried x=64 all of these show that my answer is correct and the all of the answer to the question are incorrect
anonymous
  • anonymous
tell me if im looking at this correctly is it? \[\sqrt[3]{x/8}-4\]
anonymous
  • anonymous
|dw:1377665529831:dw|
anonymous
  • anonymous
yes, thats what i thought
anonymous
  • anonymous
Where you have the a, it should be a 3.
anonymous
  • anonymous
it is a 3, it should be anyway i wrote it like that

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