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Mathematics
Calculus
Implicit differentiation
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[QUOTE="Mark44, post: 5641976, member: 147785"] If you differentiate implicitly, you'll get y' in terms of both x and y. If you divide both sides of the equation in your example by y, you get y = 8 - x[SUP]3[/SUP], so y' = -3x[SUP]2[/SUP]. The point (1, 7) is on the graph of the original equation. At this point I get y' = -3 using either version of the derivative that I calculated. Can you show what you did in logarithmic differentiation? [/QUOTE]
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Forums
Mathematics
Calculus
Implicit differentiation
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