Hello, Emmeyh!

This is a trick question . . .

We know that: . . . . right?Differentiate: .

So the function is actually: .

Therefore: .

And you should get the same answer doing it "the long way."

.

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- Jan 22nd 2009, 08:34 AM #1

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- Jan 22nd 2009, 10:26 AM #2

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