What's happening in this derivative? Ends as: From what I know. Does not get me to that end result, where u equals (x*cos(x)). Is there a special rule in ending with derivatives like this?
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Originally Posted by Zanderist Does not get me to that end result, where u equals (x*cos(x)). Is there a special rule in ending with derivatives like this? This formula is correct .. In your problem .. Apply the formula .. and notice that you will need the product rule to find ..
oh right.
BTW, you should put brackets like this: Originally Posted by Zanderist