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# C4 - Differentiate (lnx)^2 Watch

1. How would you go about doing this? Would you use like chain rule?

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2. (Original post by Gary)
How would you go about doing this? Would you use like chain rule?

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Yeah, try using the chain rule with .
3. (Original post by Gary)
How would you go about doing this? Would you use like chain rule?

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Chain rule indeed.

x
4. integrate using by parts!
5. Ahhh thought so! was just making sure, thanks!
6. (Original post by Lai.)
integrate using by parts!
The question was to differentiate, not integrate?
7. Oohhhh LOL! Sorry, guess I've been doing too much integration! Chapter 6 is taking over my life
8. (Original post by Lai.)
Oohhhh LOL! Sorry, guess I've been doing too much integration! Chapter 6 is taking over my life
I know how you feel, integration is hard, just make sure you don't misread the question in the exam aha!
9. chain rule or product rule

chain rule you get dy/du.du/dx, 2lnx.1/x

product rule lnx.lnx = lnx/x +lnx/x= 2lnx/x so same thing

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