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alfira

find the derivative

  • one year ago
  • one year ago

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  1. alfira
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    (3/x)^x

    • one year ago
  2. Dido525
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    Do you know how to use ln differentiation?

    • one year ago
  3. alfira
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    not sure

    • one year ago
  4. alfira
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    you mean add e into it ?

    • one year ago
  5. Dido525
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    No no. Remember one thing. You can only use the power rule if you have a number on the power.

    • one year ago
  6. Dido525
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    Since that's not the case you have to use ln differentiation.

    • one year ago
  7. Dido525
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    Basically it means you take the natural log of both sides.

    • one year ago
  8. alfira
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    e^xIn(3/x)

    • one year ago
  9. alfira
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    is that what you mean?

    • one year ago
  10. Dido525
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    So we have, |dw:1355452492770:dw|

    • one year ago
  11. Dido525
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    That's what I mean :P .

    • one year ago
  12. Dido525
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    No do you see how we get the power out?

    • one year ago
  13. Dido525
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    |dw:1355452563984:dw|

    • one year ago
  14. shining
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    put it as power of e then x e^ (3/x) result: e^(3/x) + (-3/(x)^2)*x

    • one year ago
  15. Dido525
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    @shining : That works too but I prefer my way. Makes more sense to me. I was never good with powers XD .

    • one year ago
  16. shining
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    any way satisfy you!

    • one year ago
  17. alfira
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    but in your way , we have to multiply it by 1/y at the end right ?

    • one year ago
  18. shining
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    yeah

    • one year ago
  19. alfira
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    got it ` thanks guys

    • one year ago
  20. Dido525
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    |dw:1355452766676:dw|

    • one year ago
  21. Dido525
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    Now take the derivative.

    • one year ago
  22. alfira
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    got it

    • one year ago
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