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 least possible value
Forum Index -> Algebra like the article? email it to a friend.  
Author Message
[Post New]24 Aug 2008 16:41:56 IST
    Subject: Find least possible value
[Up] View Post
pantpranav (387)

Blazing goIITian

Olaaa!! Perrrfect answer. 65  [96 rates]
pantpranav's Avatar
total posts: 314    
offline Offline

Find the least possible value of the expression:


9a2 / b + 243/ab + 9b2 / a


Where a & b  are +ve integers?
    
[Post New]24 Aug 2008 17:07:17 IST
    Subject: Find least possible value
[Up] View Post
pink_ele (1380)

Blazing goIITian

Olaaa!! Perrrfect answer. 230  [345 rates]
pink_ele's Avatar
total posts: 1375    
offline Offline
d giiven xpression is
=9(a^3+27+b^3)/ab
=9{(a+b)(a^2+b^2-ab)+27}/ab
=9(a+b)(a/b+b/a-1)+27/ab}
this attians minima at a=b1
thus req value=29
nobody is wrong
even a stopped clock is right twice a day
 this reply: 0 points  (with 0 Olaaa!! Perrrfect answer.   in 0 votes )   [?]
 
You have to be logged on to rate
  
[Post New]24 Aug 2008 17:09:07 IST
    Subject: Re:Find least possible value
Accepted Answer [?] [Up] View Post
rajatsen91 (1403)

Blazing goIITian

Olaaa!! Perrrfect answer. 227  [361 rates]
rajatsen91's Avatar
total posts: 516    
offline Offline

wait posting the solution. 

I like to be myself.
 this reply: 10 points  (with 2 Olaaa!! Perrrfect answer.   in 2 votes )   [?]
 
You have to be logged on to rate
  
 
Forum Index -> Algebra
Go to:   

 Aakash Institute IIT/ AIEEE/ Medical Crash Course
Name  
E-mail  
Phone  
Mobile  
** Hurry. Exclusive goIIT Offer. Limited Seats Only!
available in: New Delhi, Amritsar, Bhatinda, Bokaro, Chandigarj, Dehradun, Guwhati, Hyderabad, Indore, Jaipur, Kanpur, Karnal, Kolkata, Kota, Lucknow, Ludhiana, Mumbai, Noida, Patiala, Patna, Pune, Ranchi, Varanasi
Top Offers for goIITians
Correspondence Courses
Brilliant Tutorials
Narayana Institute
Aakash Institute
Classroom/Crash Courses
Aakash-IITJEE : AIEEE
Aakash-IITJEE : DCE
Aakash-IITJEE : MHTCET
Aakash Institute : AIPMT
Online Test Series
Brilliant Tutorials
Narayana Institute
Aakash Institute
Mahesh Tutorials
AMITY      Sri Chaitanya