How to solve this equation?

  • Thread starter mit11
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  • #1
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I tried to solve this equation. can anyone please look at this and tell me if this is correct? If not help me out please.

5lrpg3.jpg
 
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Answers and Replies

  • #2
133
4
You can find out whether it is correct by subtituting it back into the equation. I think it doesn't quite work out the final answer seems still to be dependent on r.

In the second line you are suddenly missing a term from the product rule.
 

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