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Study23

  • 2 years ago

Differentiate the function?

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  1. Study23
    • 2 years ago
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    Not sure how to, I know about f(x+h).... The function is \(\ \Huge y=x^{\frac{-2}{5}} \).

  2. baldymcgee6
    • 2 years ago
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    Do you want to use the definition of a derivative, or differentiating rules?

  3. soty2013
    • 2 years ago
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    |dw:1351143271652:dw|

  4. Study23
    • 2 years ago
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    I don't know, honestly I don't know because we got this assignment after a test without explanation

  5. baldymcgee6
    • 2 years ago
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    Have you heard of the power rule?

  6. Study23
    • 2 years ago
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    No...

  7. baldymcgee6
    • 2 years ago
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    Does this look familiar?|dw:1351143348273:dw|

  8. Study23
    • 2 years ago
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    Yup!

  9. baldymcgee6
    • 2 years ago
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    ok... good!

  10. baldymcgee6
    • 2 years ago
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    can you set it up?

  11. Study23
    • 2 years ago
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    Hmm, just plug (x+h) for x?

  12. Study23
    • 2 years ago
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    Where does the power rule come in?

  13. baldymcgee6
    • 2 years ago
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    Basically.. forget the power rule. you will learn that later. For now you must use this method :D ... But once you learn the power rule, you will be able to differentiate that in 5 seconds.

  14. baldymcgee6
    • 2 years ago
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    |dw:1351143586995:dw|

  15. Study23
    • 2 years ago
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    Okay, because the text explains that in this chapter but I don't understand it

  16. baldymcgee6
    • 2 years ago
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    oh.. well then maybe you want to learn it?? because this method will take ALOT longer and is ALOT more work.. :0 Power rule is pretty simple to grasp... want me to explain?

  17. Study23
    • 2 years ago
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    Yes please!!

  18. baldymcgee6
    • 2 years ago
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    ok :)

  19. baldymcgee6
    • 2 years ago
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    |dw:1351143786848:dw|

  20. Study23
    • 2 years ago
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    Is the d/dx the same as f'(x)?

  21. baldymcgee6
    • 2 years ago
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    very good question, there is a little bit of history to this... basically two guys were inventing calculus near the same time, so lots of different notations came about. These all mean the same thing: |dw:1351144085607:dw|

  22. Study23
    • 2 years ago
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    Oh okay! It just looks more complicated haha

  23. baldymcgee6
    • 2 years ago
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    Back to our question... |dw:1351144249816:dw|

  24. baldymcgee6
    • 2 years ago
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    It does look more intimidating, but you will get used to it :)

  25. Study23
    • 2 years ago
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    So basically you have to memorize these rules?

  26. baldymcgee6
    • 2 years ago
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    haha, you will have to yes... But it will become second nature. For this rule, just drop the exponent and minus one.

  27. Study23
    • 2 years ago
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    You explained it much better than the 2 paragraphs of math jargon my text has! :D

  28. baldymcgee6
    • 2 years ago
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    |dw:1351144716613:dw|

  29. Study23
    • 2 years ago
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    I got -7/5 not -3/5...

  30. baldymcgee6
    • 2 years ago
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    Sorry.. i'm tired.. and you're right. :)

  31. baldymcgee6
    • 2 years ago
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    |dw:1351145072249:dw|

  32. Study23
    • 2 years ago
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    Okay... Thanks for all your help @baldymcgee6 ! I appreciate it greatly!! :D

  33. Study23
    • 2 years ago
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    After all, not everyone takes the time to explain the concept!

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