• Award-winning private GMAT tutoring
Register now and save up to \$200

Available with Beat the GMAT members only code

• Magoosh
Study with Magoosh GMAT prep

Available with Beat the GMAT members only code

• Free Veritas GMAT Class
Experience Lesson 1 Live Free

Available with Beat the GMAT members only code

• Get 300+ Practice Questions

Available with Beat the GMAT members only code

• 5-Day Free Trial
5-day free, full-access trial TTP Quant

Available with Beat the GMAT members only code

• 1 Hour Free
BEAT THE GMAT EXCLUSIVE

Available with Beat the GMAT members only code

• Free Practice Test & Review
How would you score if you took the GMAT

Available with Beat the GMAT members only code

• Free Trial & Practice Exam
BEAT THE GMAT EXCLUSIVE

Available with Beat the GMAT members only code

• 5 Day FREE Trial
Study Smarter, Not Harder

Available with Beat the GMAT members only code

## 2 Part question- Max., & Min. value of function!

This topic has 2 expert replies and 3 member replies
Shalabh's Quants Master | Next Rank: 500 Posts
Joined
06 Apr 2012
Posted:
134 messages
Followed by:
5 members
Thanked:
35 times

#### 2 Part question- Max., & Min. value of function!

Sun Sep 09, 2012 3:50 am
Hello Friends!

Try this question...

The function f(x,y) is such that f(x,y) = x^2.y^3 & x+y =25. Where x, & y are non-negative integers. Select one minimum possible, & one maximum possible value for f(x,y). Make only two selections, one in each column.

_________________
Shalabh Jain,
e-GMAT Instructor

Need free GMAT or MBA advice from an expert? Register for Beat The GMAT now and post your question in these forums!
AbhiJ Master | Next Rank: 500 Posts
Joined
19 May 2010
Posted:
381 messages
Followed by:
2 members
Thanked:
41 times
Sun Sep 09, 2012 10:49 pm
Min = 0
Max = (5^5)*(2^2)*(3^3) = 337500

tanviet Legendary Member
Joined
20 May 2008
Posted:
1404 messages
Followed by:
2 members
Thanked:
18 times
Wed Oct 03, 2012 7:07 pm
how you the the max value? pls, explain.

### GMAT/MBA Expert

e-GMAT GMAT Instructor
Joined
26 Jul 2010
Posted:
626 messages
Followed by:
223 members
Thanked:
527 times
Sun Dec 09, 2012 11:53 pm
duongthang wrote:
how you the the max value? pls, explain.
Hi,

If X+Y=constant; where X & Y are variables,
then (X^m)*(Y^m)=maximum, when X/m=Y/n.

Here, X+Y=25=constant, hence X/2=Y/3 => X = 10, & Y = 15.

=> This gives X^2.Y^3 = 337500.

-Shalabh

### GMAT/MBA Expert

kevincanspain GMAT Instructor
Joined
22 Mar 2007
Posted:
613 messages
Followed by:
63 members
Thanked:
171 times
GMAT Score:
790
Tue Dec 11, 2012 2:44 am
Do you think this concept is tested in Integrated Reasoning?

_________________
Kevin Armstrong
GMAT Instructor
Gmatclasses

Free GMAT Practice Test under Proctored Conditions! - Find a practice test near you or live and online in Kaplan's Classroom Anywhere environment. Register today!
tanviet Legendary Member
Joined
20 May 2008
Posted:
1404 messages
Followed by:
2 members
Thanked:
18 times
Thu Feb 07, 2013 11:57 pm
gmat dose not test the formular.

### Best Conversation Starters

1 Vincen 180 topics
2 lheiannie07 61 topics
3 Roland2rule 54 topics
4 ardz24 44 topics
5 VJesus12 14 topics
See More Top Beat The GMAT Members...

### Most Active Experts

1 Brent@GMATPrepNow

GMAT Prep Now Teacher

155 posts
2 Rich.C@EMPOWERgma...

EMPOWERgmat

105 posts
3 GMATGuruNY

The Princeton Review Teacher

101 posts
4 Jay@ManhattanReview

Manhattan Review

82 posts
5 Matt@VeritasPrep

Veritas Prep

80 posts
See More Top Beat The GMAT Experts