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Core 1, differentiation maths help!

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    1) Y = x^4 + x^1/3 + 3, find dy/dx

    2) Y = 8x^5 - 4x^3 + x - 3 - x^-2, find dy/dx
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    What are you having trouble with specifically? If you have been taught how to differentiate with the power rule I can't see how these are causing you any specific trouble.
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    Best advice is to watch a video or use a maths book to learn how to differentiate. Your examples are the basics of differentiation, once you know how to differentiate then they should be fairly straightforward.
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    (Original post by georgiefulcher)
    1) Y = x^4 + x^1/3 + 3, find dy/dx

    2) Y = 8x^5 - 4x^3 + x - 3 - x^-2, find dy/dx
    Post what you have got so far then we can see what you don't understand.
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    So these are all fairly simple if you use the rule: if y=kx^n then dy/dx=knx^(n-1). of course not forgeting that the numbers have no power of x so they are zero when differentiated, and remember to just differentiate each term individually

    so
    1- dy/d x= 4x^3 + 1/3x^(-2/3)

    2- dy/dx = 40x^4 - 12x^2 + 1 + 2x^-3
 
 
 
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