Normally I would know how to get a simple log derivative, but this problem is much more difficult.
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Originally Posted by radioheadfan Normally I would know how to get a simple log derivative, but this problem is much more difficult. Let represent the given fuction. The derivitive is then Use the Quotient Rule or Product Rule for the last bit.
Originally Posted by radioheadfan Normally I would know how to get a simple log derivative, but this problem is much more difficult. Use the usual log rules to get an expression that is simpler to differentiate. Edit: By the way, you better note that .
Originally Posted by mr fantastic Use the usual log rules to get an expression that is simpler to differentiate. Or that...
I used the log rules and got 2/3
Originally Posted by radioheadfan I used the log rules and got 2/3 What happened to all the x's?
Originally Posted by radioheadfan I used the log rules and got 2/3 Don't think that's right... Using the log rules, we get Now differentiate...
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