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Math Help - derivatives

  1. #1
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    derivatives

    find the derivative.


    #1.)

    f(x) = (3x+1)^3/(x)^6


    #2.)

    f(x) = 1/2x+sin^3x


    ..if someone could help me out Fast! id really appreciate it. thanks
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  2. #2
    Member jacs's Avatar
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    Here is the first one, using the quotient rule

    <br />
y' = \frac{vu' - uv'}{v^2}<br />

    where
     <br />
y = \frac{u}{v}<br />
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  3. #3
    Member jacs's Avatar
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    Quote Originally Posted by ineedhelp123
    find the derivative.




    #2.)

    f(x) = 1/2x+sin^3x


    ..if someone could help me out Fast! id really appreciate it. thanks
    I am assuming you meant this

    <br />
y = \frac{1}{2x+sin^3 x}<br />


    hope that helps

    jacs

    ps. sorry about crappy handwriting hope you can read, not confident enough in laTex yet
    Attached Thumbnails Attached Thumbnails derivatives-deriv2.jpg  
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  4. #4
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    thanks!

    Quote Originally Posted by jacs
    I am assuming you meant this

    <br />
y = \frac{1}{2x+sin^3 x}<br />


    hope that helps

    jacs

    ps. sorry about crappy handwriting hope you can read, not confident enough in laTex yet
    thanks sooo much for all your help! it all makes sense now. i really appreciate it. thanks!
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  5. #5
    Member jacs's Avatar
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    Smile

    you are welcome
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