sign up I login
 advanced
refer a friend - earn nickels!!

Ask & Discuss Questions with Community & Experts

Moderation Team
 90 chars left    advanced
Ask iit jee aieee pet cbse icse state board community Community Discussion Question: Find dy / dx
Forum Index -> Differential Calculus like the article? email it to a friend.  
Author Message
nknikhilesh1 (108)

Scorching goIITian

Olaaa!! Perrrfect answer. 18  [27 rates]

nknikhilesh1's Avatar

total posts: 236    
offline Offline

    
astatine19 (1349)

Forum Expert Blazing goIITian

Olaaa!! Perrrfect answer. 235  [322 rates]

astatine19's Avatar

total posts: 552    
offline Offline


"A perfect mind is a treasure unsurpassed."

"It is said that human beings have 5 senses. That's because most of them lack the 6th - common sense."

-- astatine19 --
http://astatine19.blogspot.com/
 this reply: 10 points  (with Olaaa!! Perrrfect answer.   in 2 votes )   [?]
 
You have to be logged on to rate
  
muskaanrelhan (574)

Blazing goIITian

Olaaa!! Perrrfect answer. 100  [137 rates]

muskaanrelhan's Avatar

total posts: 497    
offline Offline

dy/dx = +


plz correct me if I'm wrong


If you have a kind word to say, say it now
If you have something too give, give it now
If you can make someone glad or another less sad,
Do it now... Do it now.... Do it now...

If you have trust to bestow, show it now
If you have friendship to give, give it now
If there's pain you can ease or someone you can please,
Do it now... Do it now... Do it now...


 this reply: 10 points  (with Olaaa!! Perrrfect answer.   in 2 votes )   [?]
 
You have to be logged on to rate
  
akku.91 (0)

New kid on the Block

Olaaa!! Perrrfect answer. 0  [0 rates]

akku.91's Avatar

total posts: 13    
offline Offline

y = (x + 1/x) + (x)^1+1/x





solution-



taking log on both sides



logy = log(x+1/x)^x +log(x)^1+1/x



differentiating w.r.t to x



1/y*dy/dx = xlog(x+1/x)+1+1/x logx



dy/dx= y* x log(x+1/x )+(1+1/x)logx



now substitute the value of y




dy/dx = (x+1/x)+(x)^(1+1/x)* x log(x+1/x)+(1+1/x)logx


akku rocksssss
 this reply: 0 points  (with Olaaa!! Perrrfect answer.   in 0 votes )   [?]
 
You have to be logged on to rate
  
allamraju (3422)

Blazing goIITian

Olaaa!! Perrrfect answer. 606  [802 rates]

allamraju's Avatar

total posts: 1014    
offline Offline
See akku,I think u didn't understand what I nudged you.

y=[1+1/x]x+(x)1+1/x

Taking log on both sides will give you,

lny=ln[(1+1/x)x+(x)1+1/x] and not ln(1+1/x)x+ln(x)1+1/x.

Hope u got it.

MAKING A MISTAKE IS HUMAN BUT REPEATING IT IS IDIOTIC.
 this reply: 0 points  (with Olaaa!! Perrrfect answer.   in 0 votes )   [?]
 
You have to be logged on to rate
  
 
Forum Index -> Differential Calculus
Go to:   

Top Offers for goIITians
Correspondence Courses
Brilliant Tutorials
Narayana Institute
Aakash Institute
Classroom/Crash Courses
Narayana - Kota , Delhi , Others
Brilliant Tutorials - Class , Crash
Aakash Institute - Medical , Engg
Online Test Series
Brilliant Tutorials
Narayana Institute
Aakash Institute
Mahesh Tutorials
AMITY      Sri Chaitanya