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roselin

find the derivative of u=5x+1/2 sqrt of x

  • one year ago
  • one year ago

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  1. zepdrix
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    Rewrite the sqrt as a fractional exponent. From there, it will be easier to see what you need to do.( Psssst! Power rule!) \[\large u=5x+\frac{ 1 }{ 2 } x^{1/2}\]

    • one year ago
  2. roselin
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    okay,

    • one year ago
  3. roselin
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    after that, just plug in the values for each?

    • one year ago
  4. zepdrix
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    Hmm you shouldn't need to "plug" anything in, do you know how to take a derivative using the power rule?

    • one year ago
  5. roselin
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    i got 5/ x^1/2

    • one year ago
  6. roselin
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    yeah

    • one year ago
  7. zepdrix
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    Hmmm

    • one year ago
  8. roselin
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    nx^ n-1?

    • one year ago
  9. roselin
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    sorry

    • one year ago
  10. zepdrix
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    yes good, that's the derivative of x^n :)

    • one year ago
  11. zepdrix
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    |dw:1351713737221:dw| Understand what we did there? :O

    • one year ago
  12. roselin
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    yeah,

    • one year ago
  13. roselin
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    do i have to simplify it further?

    • one year ago
  14. roselin
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    or just leave it like that?

    • one year ago
  15. zepdrix
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    |dw:1351714227487:dw| You can write it like this if you want. But it's not a big deal. The first form of the answer we came up with is fine.

    • one year ago
  16. roselin
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    okay, thanks

    • one year ago
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