[Show all top banners]

redlotus
Replies to this thread:

More by redlotus
What people are reading
Subscribers
Subscribers
[Total Subscribers 1]

Rolemodel
:: Subscribe
Back to: Kurakani General Refresh page to view new replies
 derivatives - math problem help
[VIEWED 4921 TIMES]
SAVE! for ease of future access.
Posted on 03-20-10 1:10 PM     Reply [Subscribe]
Login in to Rate this Post:     0       ?    
 

find the derivative of:


f(x)=ln(x+5)^(1/2)


 
Posted on 03-20-10 1:24 PM     Reply [Subscribe]
Login in to Rate this Post:     0       ?    
 

1/2(x+5) shud be the answer... (however, please confirm yourself)


dlnx/dx = 1/x, so use chain rule as shown below,


dln(sqrt(x+5))        d(sqrt(x+5))    


__________ * ___________


d(sqrt(x+5))              dx


 
Posted on 03-20-10 1:25 PM     Reply [Subscribe]
Login in to Rate this Post:     0       ?    
 

in fact, i shuda been clearer.... 1/ (2(x+5)) <--- answer
 
Posted on 03-20-10 1:38 PM     Reply [Subscribe]
Login in to Rate this Post:     0       ?    
 

I think it should be (just thinking, but I would have this answer if I were asked)
1/2(x+5)-1/2

I haven't taken much of calculus and my familiarity with it is from my 11th grade where I passed maths by securing 36 in final exam :)  So, don't rely on it completely, though i believe in my solution to my knowledge, better check it by urself.


 
Posted on 03-20-10 5:53 PM     Reply [Subscribe]
Login in to Rate this Post:     0       ?    
 

i think WTF is  correct.. i got the same answer..

 
Posted on 03-20-10 6:17 PM     Reply [Subscribe]
Login in to Rate this Post:     0       ?    
 

Hey redlotus, when u find out correct solution, will you report it here.

because as far as I know
d ln(x+5)1/2 / dx = 1/2 (x+5)1-1/2

= .5(x+5)-1/2

 
Posted on 03-20-10 6:30 PM     Reply [Subscribe]
Login in to Rate this Post:     0       ?    
 

hey namaskar , u better take some derivative classes!! i think u know nothing abt calculus and esp derivative....

 
Posted on 03-20-10 6:41 PM     Reply [Subscribe]
Login in to Rate this Post:     0       ?    
 

Sports freak, I'm happy that I don't need to. Days of school overrrrrrrrrr for now. Thanx for pointing out anyway.

Ya I find something wrong with my solution

If the derivative was with respect to (x+5) i think my earlier solution would be right.

d ln(x+5)1/2 / d (x+5) = .5 (x+5)- .5

but with respect to x only nooooooo.
Sorry for giving wrong solution. My baddddddddd     :)


 
Posted on 03-20-10 6:47 PM     Reply [Subscribe]
Login in to Rate this Post:     0       ?    
 

let me guess another soln

how about 2(sqrt X)

Pls someone post a real soln.
I am getting curious  :)
and it is boring that all other threads today in Sajha are related to dead person.

 
Posted on 03-20-10 7:11 PM     Reply [Subscribe]
Login in to Rate this Post:     0       ?    
 
 
Posted on 03-20-10 7:13 PM     Reply [Subscribe]
Login in to Rate this Post:     0       ?    
 

Last edited: 20-Mar-10 07:19 PM

 
Posted on 03-20-10 9:52 PM     Reply [Subscribe]
Login in to Rate this Post:     0       ?    
 

Thanx raju for making it clear. Glad don't have to go thru this again :)


 


Please Log in! to be able to reply! If you don't have a login, please register here.

YOU CAN ALSO



IN ORDER TO POST!




Within last 200 days
Recommended Popular Threads Controvertial Threads
डीभी परेन भने खुसि हुनु होस् ! अमेरिकामाधेरै का श्रीमती अर्कैसँग पोइला गएका छन् !
शीर्षक जे पनि हुन सक्छ।
What are your first memories of when Nepal Television Began?
Sajha Poll: नेपालका सबैभन्दा आकर्षक महिला को हुन्?
ChatSansar.com Naya Nepal Chat
NRN card pros and cons?
Basnet or Basnyat ??
निगुरो थाहा छ ??
Nas and The Bokas: Coming to a Night Club near you
TPS Re-registration
अमेरिकामा छोरा हराएको सूचना
ओच्छ्यान मुत्ने समस्या ( confession )
Do nepalese really need TPS?
TPS Re-registration case still pending ..
Drawback for applying NRN card
Breathe in. Breathe out.
nrn citizenship
Democrats are so sure Trump will win
My facebook archive (for sale)
ढ्याउ गर्दा दसैँको खसी गनाउच
Nas and The Bokas: Coming to a Night Club near you
Mr. Dipak Gyawali-ji Talk is Cheap. US sends $ 200 million to Nepal every year.
Harvard Nepali Students Association Blame Israel for hamas terrorist attacks
TPS Update : Jajarkot earthquake
NOTE: The opinions here represent the opinions of the individual posters, and not of Sajha.com. It is not possible for sajha.com to monitor all the postings, since sajha.com merely seeks to provide a cyber location for discussing ideas and concerns related to Nepal and the Nepalis. Please send an email to admin@sajha.com using a valid email address if you want any posting to be considered for deletion. Your request will be handled on a one to one basis. Sajha.com is a service please don't abuse it. - Thanks.

Sajha.com Privacy Policy

Like us in Facebook!

↑ Back to Top
free counters