http://i39.tinypic.com/nnqgk8.jpg I got something close to the second choice but not exact. Can you show how you got it?
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Originally Posted by janedoe http://i39.tinypic.com/nnqgk8.jpg I got something close to the second choice but not exact. Can you show how you got it? By implicit differentiation [and chain rule], we have Can you finish off the problem?
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