Radeesh Koonichere

• Feb 25th, 2006

 

3x+4y=103x+3y=6Solving y=4and x=-2Substituting in equ 3x+11y=3(-2)+11(4)=-6+44=38Minimum value of this equ must be 38.

lalli

 Profile Answers by lalli 

• Mar 14th, 2006

 

solving the equations we getx=-2 and y=4then value of 3x+11y=38THEN WHAT IS THE SENSE IN ASKING MINIMUM VALUE. IF THERE IS ANY PLEASE REPLY

N.Srinivasan

• May 8th, 2006

 

Hi Lalitha,

         You are asking a good question. x and y are the variables.

here we find a value for x and y. It is not fixed.we find the value for x and y that is minimum.the maximum value for x and y is anything

C. Sivasankaran

• May 18th, 2006

 

The question may be x^3 + y^3 = 6.

x and y may be positive or negative.  there are four ways.

1.  + x , + y

2.  +x , - y

3.  - x , + y

4.  -x , -y

Both negative not possible since the result 6 is positive.

Both may be positive or either one may be negative.  Because of that only they asked as minimum value.  By trial and error method I got two set of answers x=1.112 , y=1.666 and x= -9.92 , y= 9.94.   We will get min value for 3x+11y from the first set of answer. The answer is approx 21.66.

Kindly comment on my understanding.

SURESH

• Jul 25th, 2006

 

3X+4Y=10 3X+11Y=? 3X+3Y=6 FOR SOLVING THIS TWO EQUATION X=-2 Y=4 3*-2+11*4=38 ANS=38

Sai Gautam

• Oct 9th, 2011

 

hi....
yup this is the correct interpretation of the question...
appeared in one of the cognizant placement papers apti....
they are meant to be solved at the rate of a question a minute...!!