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burhan101

  • 2 years ago

Find the derivative

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  1. burhan101
    • 2 years ago
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    \[\huge y=(15d)e^{\frac{ -d }{ 5 }}\]

  2. cwrw238
    • 2 years ago
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    6 penguins on board!

  3. burhan101
    • 2 years ago
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    \[\huge y= (15d)'(e^{\frac{ -d }{ 5 }})+(15d)((e^{\frac{ -d }{ 5 }})'\]

  4. burhan101
    • 2 years ago
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    y'= *

  5. Azteck
    • 2 years ago
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    Are you differentiating with respect to d or x?

  6. Azteck
    • 2 years ago
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    Or is d a constant?

  7. Azteck
    • 2 years ago
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    "d"*

  8. burhan101
    • 2 years ago
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    \[\huge y'= 15(e^{\frac{ -d }{ 5 }})-30d(e^{\frac{ -d }{ 5 }})\]

  9. Azteck
    • 2 years ago
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    Ah sorry, my eyes went somewhere. Sorry about that.

  10. burhan101
    • 2 years ago
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    d is a constant :P

  11. Azteck
    • 2 years ago
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    d is the variable, not a constant.

  12. Azteck
    • 2 years ago
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    and you are almost correct. The 30 is not right.

  13. cwrw238
    • 2 years ago
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    check your second part of your answer

  14. cwrw238
    • 2 years ago
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    (e^(-d/5)' = -(1/5)e*(-d/5)

  15. Azteck
    • 2 years ago
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    @burhan101 are you there? If you are, please read what cwrw238 has written above.

  16. burhan101
    • 2 years ago
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    @cwrw238 im a little confused

  17. burhan101
    • 2 years ago
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    |dw:1371805163917:dw| @Azteck @cwrw238

  18. Azteck
    • 2 years ago
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    \[\frac{1}{5}\times 15=75???\]

  19. Azteck
    • 2 years ago
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    I think you got confusde about 1/5 and 5 when multiplying.

  20. Azteck
    • 2 years ago
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    confused*

  21. burhan101
    • 2 years ago
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    oppps 3*

  22. burhan101
    • 2 years ago
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    |dw:1371805796678:dw|

  23. burhan101
    • 2 years ago
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    @Azteck

  24. Azteck
    • 2 years ago
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    Yep, excellent!

  25. Azteck
    • 2 years ago
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    Well done.

  26. burhan101
    • 2 years ago
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    One more question

  27. burhan101
    • 2 years ago
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    if i solve for d, will i have to use ln ?

  28. burhan101
    • 2 years ago
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    nvm i got it :P

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