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Calculus

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DirtyDiabetic
Posts: 308 - Karma: 11

+K to the first person who would be kind enough to tell me the correct derivative of y=-x(8-x^2)^(1/2)

Dec 7 2009 8:17PM
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killabees
Posts: 8558 - Karma: 494
its 42 isnt it?
Dec 7 2009 8:18PM
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Hansel.
Posts: 4583 - Karma: 112
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Dec 7 2009 8:21PM
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t_rob
Posts: 6433 - Karma: 11,458
(x^2/(8-x^2)^2)-(8-x^2)^(1/2)
Dec 7 2009 8:22PM
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Hansel.
Posts: 4583 - Karma: 112
maybe
Dec 7 2009 8:22PM
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Slinger1x1
Posts: 8853 - Karma: 66
y=x(root)(-8+x^2)
y=x^2-2i(root)2

i think?

Dec 7 2009 8:22PM
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Hansel.
Posts: 4583 - Karma: 112
well fuck me
Dec 7 2009 8:22PM
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thelittlebiggs
Posts: 173 - Karma: 10
(-x)(.5(8-x^2)^(1/2))(-2x)+(-1)(8-x^2)^(1/2)

Great site for Calc is Wolframalpha
check it.
Dec 7 2009 8:22PM
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theblackrod
Posts: 2162 - Karma: 575
i got y'=-1(8-x^2)^1/2 +x/2((8-x^2)^(-1/2))*-2x which simplifies to y'=-1(8-x^2)^1/2 - x^2(8-x^2)^(-1/2)
Dec 7 2009 8:22PM
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