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September 28, 2025, 12:31:05 pm

Author Topic: dif dif differentation...  (Read 1738 times)  Share 

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khalil

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dif dif differentation...
« on: March 22, 2009, 10:35:25 am »
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(loge X)^3... how would you find the differentration for this..lol. forgot how to spell it!

is it the same as loge x^3   ? i don't think so though!
thx...in advance

Damo17

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Re: dif dif differentation...
« Reply #1 on: March 22, 2009, 10:57:26 am »
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(loge X)^3... how would you find the differentration for this..lol. forgot how to spell it!

is it the same as loge x^3   ? i don't think so though!
thx...in advance

use the chain rule.


                 

« Last Edit: April 03, 2009, 07:18:27 am by Damo17 »
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matrix

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Re: dif dif differentation...
« Reply #2 on: April 03, 2009, 12:43:09 am »
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Are you sure that logs are same?
compare:
(log e)^3 =1^3 = 1
(log e ^3)=3 log e= 3

note: I used log to base e,  that is ln.

Mao

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Re: dif dif differentation...
« Reply #3 on: April 03, 2009, 09:40:59 am »
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Are you sure that logs are same?
compare:
(log e)^3 =1^3 = 1
(log e ^3)=3 log e= 3

note: I used log to base e,  that is ln.


Not sure what your concern is, but 'log e' by itself has no meaning, it has to be . It's like saying "calculate 3*", 3 times what?

and
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VCE 2008 | Monash BSc (Chem., Appl. Math.) 2009-2011 | UoM BScHon (Chem.) 2012 | UoM PhD (Chem.) 2013-2015

matrix

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Re: dif dif differentation...
« Reply #4 on: April 03, 2009, 10:50:08 am »
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Are you sure that logs are same?
compare:
(log e)^3 =1^3 = 1
(log e ^3)=3 log e= 3

note: I used log to base e,  that is ln.


Not sure what your concern is, but 'log e' by itself has no meaning, it has to be . It's like saying "calculate 3*", 3 times what?

and
I was refering to Damo17's statement that given logs are the same. however, he relized his mistake and edited his post (which is OK, we all make errors).
Re log expressions, I just did not have time/skills to type mathematical notation of log x with base e and have used an example to show given logs are not the same.

Damo17

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Re: dif dif differentation...
« Reply #5 on: April 03, 2009, 12:29:34 pm »
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Are you sure that logs are same?
compare:
(log e)^3 =1^3 = 1
(log e ^3)=3 log e= 3

note: I used log to base e,  that is ln.


Not sure what your concern is, but 'log e' by itself has no meaning, it has to be . It's like saying "calculate 3*", 3 times what?

and
I was refering to Damo17's statement that given logs are the same. however, he relized his mistake and edited his post (which is OK, we all make errors).
Re log expressions, I just did not have time/skills to type mathematical notation of log x with base e and have used an example to show given logs are not the same.


Yeah, I was in a rush then.
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matrix

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Re: dif dif differentation...
« Reply #6 on: April 03, 2009, 12:42:14 pm »
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that's ok Damo17,
i just wanted to clarify it so khalil is sure about the question.

Damo17

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Re: dif dif differentation...
« Reply #7 on: April 03, 2009, 02:10:04 pm »
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that's ok Damo17,
i just wanted to clarify it so khalil is sure about the question.

Thanks for correcting me. I could have read this topic 100 times and still not have seen my mistake.
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