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March 8th, 2010, 06:29 PM   #1
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Derivatives

Could someone, kindly, check these solutions?




Eqn. of the normal:

where











Eqn. of the tangent:

where







Eqn. of the normal:





Help with finding the gradient please.
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March 8th, 2010, 06:54 PM   #2
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Re: Derivatives

For 1)

For 2)

Everything else looks correct.
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March 9th, 2010, 06:54 PM   #3
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Re: Derivatives

Thanks.
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