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exponential int

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RuiAce:
You don't really get told how the chain rule is reversed as far as 2U goes. It's taught a bit more properly in 3U.

For 2U purposes, you may take that method of reversing the chain rule for granted

bananna:

--- Quote from: jamonwindeyer on March 02, 2017, 11:44:14 am ---Pretty much! It is kind of like integrating with the chain rule; you have to be really careful when you do it, and they'll usually lead you into it like they have here!

--- End quote ---

oh ok..is there a formula for integrating with the chain rule or is that a method you use just for working out

thnx


--- Quote from: RuiAce on March 02, 2017, 11:46:16 am ---You don't really get told how the chain rule is reversed as far as 2U goes. It's taught a bit more properly in 3U.

For 2U purposes, you may take that method of reversing the chain rule for granted

--- End quote ---


oh okay answered my question haha

thanks

bananna:
sorry, one more q :

I was able to differentiate it successfully, but I'm not able to integrate it/reverse it.

thanks :)

jamonwindeyer:

--- Quote from: bananna on March 02, 2017, 11:58:49 am ---sorry, one more q :

I was able to differentiate it successfully, but I'm not able to integrate it/reverse it.

thanks :)

--- End quote ---

YOur result for the differentiation should have been:



Notice that the integral we are asked to find is half of this expression - We've just lost the factor of 2 in the bracket out the front. So the answer is just:



Does that help? :)

bananna:

--- Quote from: jamonwindeyer on March 02, 2017, 12:27:24 pm ---YOur result for the differentiation should have been:



Notice that the integral we are asked to find is half of this expression - We've just lost the factor of 2 in the bracket out the front. So the answer is just:



Does that help? :)

--- End quote ---

sorry, in the final product, where did the

(2x-2) go?

thanks

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