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Math Help - Differentiating expressions!! Please help :)

  1. #1
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    Post Differentiating expressions!! Please help :)

    Hi guys.
    I am trying to differentiate 3 different questions with respect to x, they are shown in the attatchment..

    Please help

    thanks!!
    Attached Thumbnails Attached Thumbnails Differentiating expressions!! Please help :)-image201303210001.jpg  
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  2. #2
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    Re: Differentiating expressions!! Please help :)

    1. Use the chain rule.

    2. Use the product rule.

    3. Use the quotient rule. You will need to use the chain rule at some point as well.
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  3. #3
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    Re: Differentiating expressions!! Please help :)

    1. d/dx ln((x^3)+3 = (3x^2)/((x^3)+3)

    2. d/dx (x^2)e^5x = 5(x^2)e^5x + (2x)e^5x

    3. d/dx x/((1+x^2)^(1/2)) = [((1+x^2)^(1/2))(1) - ((2x)/(2((1+x^2)^(1/2))))]/(1+x^2)
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