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anonymous

  • 4 years ago

I need some major help, who wants a challenge? Find the number a, based on the following information. f(x) = x^6 f'(a)= -1458

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  1. anonymous
    • 4 years ago
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    a= what?

  2. saifoo.khan
    • 4 years ago
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    \[-208 x^7\]

  3. Kainui
    • 4 years ago
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    What is the derivative of f(x)? Find that and set it equal to f'(a) and solve!

  4. anonymous
    • 4 years ago
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    -3

  5. anonymous
    • 4 years ago
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    -3 either. .

  6. Kainui
    • 4 years ago
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    -3 is the correct answer.

  7. anonymous
    • 4 years ago
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    so the derivitive is what? how do I find that?

  8. anonymous
    • 4 years ago
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    f(x)=2x^2= 2x right?

  9. anonymous
    • 4 years ago
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    |dw:1328139034587:dw|

  10. anonymous
    • 4 years ago
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    so f(x)= rx^r-1 is the formula you use to get the answer?

  11. Kainui
    • 4 years ago
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    The derivative is a function that tells you the slope of a function at any point x on the other function. So suppose you have f(x) and f'(x), a function and its derivative. So if you plug in a value to the function f'(x) it tells you the the slope of a a point on f(x). Yes, paunic, that is the formula, and it is called the power rule.

  12. anonymous
    • 4 years ago
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    ok thanks!

  13. anonymous
    • 4 years ago
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    |dw:1328139209785:dw| to find the derivative, use the formula.

  14. Kainui
    • 4 years ago
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    No problem! =D If you have any more questions about calculus or derivatives I'll be happy to help.

  15. anonymous
    • 4 years ago
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    |dw:1328139249162:dw|

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