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... ...

For all positive real numbers r,s, and t, let Image be defined by the equation: Image

Column AColumn B
========
1, x, x1, 2, 1

(A) Column A is larger
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Nova Math - Problem Set B: Substitution 2

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Image Not Available
 
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Posted: 02/27/2012 09:52
I cannot understand the question.
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Posted: 02/27/2012 14:36
Here is the question corrected. Please see attached picture.
Image Not Available
 
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Posted: 01/25/2013 01:14
I still don't get it
Contributor
 
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Posted: 01/25/2013 23:55
Think of defined function as f(x). So in this case f(r,s,t) =r*sqrt(s+t)

Column A is f(1,x,x)=sqrt(2x)
Column B is f(1,2.1)=sqrt(3)

Which one is larger? Can't really know since x can be anything, right? So the answer is D.
Image Not Available
 
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Posted: 10/04/2013 10:28
What are the double lines above those variables?
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Reply 1 of 1
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Posted: 10/04/2013 10:37
Hi Tiffany,

The problem is testing how well you can adjust to unusual symbols.

The double lines are just a random symbol we used to represent the expression. We could have used @(r, s, t) or any other distinctive symbol.

The Staff at Nova Press
Image Not Available
 
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Posted: 04/18/2015 14:48
Not clear. Got it correct based on simple quick reasoning but further analysis doesn't prove to be useful. Another lame question. Part of the more difficult stuff is being able to understand the questions!
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