Math Forum :: View topic – Few Equations that need to be solved…

Few Equations that need to be solved…
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kennychow

Joined: 08 Nov 2007Posts: 3

Posted: Thu Nov 08, 2007 3:02 am    Post subject: Few Equations that need to be solved…

Given that: 1) X(a+1) >1 2) Y (b+1) >1 3) (c+1)(X+Y) >c Please solve Min. value of x, y, z in terms of a, b, c

Many thanks!!!

Kahoo

Frequent VisitorJoined: 29 Oct 2003Posts: 739

Location: HKU Math

Posted: Fri Nov 09, 2007 12:21 am    Post subject:

There are no x, y, z but only X, Y… any typo?

kennychow

Joined: 08 Nov 2007Posts: 3

Posted: Mon Nov 12, 2007 8:50 am    Post subject:

Ops ..sorry….ys…typo mistake
x and y only

Kahoo

Frequent VisitorJoined: 29 Oct 2003Posts: 739

Location: HKU Math

Posted: Tue Nov 13, 2007 8:41 pm    Post subject:

You question is not very clear. What do you mean by “minimum value of X and Y”? Each of X and Y has a minimal value, but they may not be attainable at the same time.

For instance, if X >= 1, Y >= 2, X+Y >= 4, what is the “minimum value of X and Y”?

kennychow

Joined: 08 Nov 2007Posts: 3

Posted: Wed Nov 14, 2007 4:12 am    Post subject:

~.~ i dunno just my elder bro. asked me to solve… >< how to solve this eq????

PLZ HELP

Kahoo

Frequent VisitorJoined: 29 Oct 2003Posts: 739

Location: HKU Math

Posted: Wed Nov 14, 2007 7:55 pm    Post subject:

How can you solve something that you don’t know what it is?
You’d better clarify the meaning of the question before attempting to solve it.

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