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Mathematics 8 Online
hartnn (hartnn):

@gudden

hartnn (hartnn):

try to post your equation here in comments

OpenStudy (gudden):

finally! :p

OpenStudy (gudden):

If \[y = x ^{\ln x ^{\ln(\ln x)}}\] then dy/dx is equal to ?

OpenStudy (gudden):

hold on! I've got options too! The question is under the section Only 1 answer is correct , but I found that 2 of them were correct!!

hartnn (hartnn):

woah! so many 'ln's :P

OpenStudy (gudden):

Yeah I know.. :p

OpenStudy (gudden):

Im just gonna type the options which I got to be correct! Alright ??

hartnn (hartnn):

sure

OpenStudy (gudden):

\[y/x (\ln x)^{\ln(\ln x)}(2 \ln(\ln x) +1 )\]

OpenStudy (gudden):

and the other one is \[\frac{ y }{ x} ( \frac{ \ln y }{ \ln x }) (2 \ln ( \ln x ) +1 )\]

OpenStudy (gudden):

Is the booklet wrong or am I ? :p

hartnn (hartnn):

let me grab a paper and pen :P

OpenStudy (gudden):

Sure!

hartnn (hartnn):

the first one is surely correct, checking 2nd one...

OpenStudy (gudden):

The booklet has mentioned, only the first one to be correct!! + (As I already mentioned,) the question is under 'only 1 option is correct !

hartnn (hartnn):

yeah, i am not getting that 2nd option....how did u get that ? seems incorrect...

OpenStudy (gudden):

seems incorrect o.O ?? You mean to say, that I am wrong....!!

OpenStudy (gudden):

I did something like base change or so..! :p

hartnn (hartnn):

how did u ever get ln y ??

hartnn (hartnn):

there must be some error in your steps when you got that 2nd option, but 1st one is correct.

OpenStudy (gudden):

I molded the first option a little ( Well, can't find that sheet now :( and I got to a conclusion that it was correct!)

OpenStudy (gudden):

*it = second one

OpenStudy (gudden):

BTW, GTG Would ask my fa' when he arrives + Thanks for the help!

hartnn (hartnn):

yes, both of those options are equivalent

OpenStudy (gudden):

:D The booklet is wrong XD ( a huge smile ) :p

OpenStudy (gudden):

Thanks again :)

hartnn (hartnn):

you're smarter than book ;)

OpenStudy (gudden):

*booklet :p

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