Let a,b two positive real number...................help
Favorites|Homepage
Subscriptions | sitemap
HOME > > Let a,b two positive real number...................help

Let a,b two positive real number...................help

[From: ] [author: ] [Date: 11-12-29] [Hit: ]
b two positive real number, then a♥b is a positive real numberdefined in terms of a and b by some fixed rule. suppose the operation a♥b satisfies the equations (a.b)♥b=a(b♥b) and (a♥1)♥a = a♥1, for all a,b >0 if 1♥1 = 1,......
let a,b two positive real number, then a♥b is a positive real number defined in terms of a and b by some fixed rule. suppose the operation a♥b satisfies the equations (a.b)♥b=a(b♥b) and (a♥1)♥a = a♥1, for all a,b >0 if 1♥1 = 1, compute value 19♥98?

-
I'll use # instead of the heart.

Since (ab)#b = a(b#b) and (1#1) = 1, letting b=1 gives
...a#1 = a(1#1) = a

Since (a#1)#a = a#1, we get
...a#a = a, so b#b = b

The first equation is then
...(ab)#b = a(b#b) = ab

Replace a with c/b for some positive real number c (for each a such a c exists) to get
...(cb/b)#b = c#b = cb/b = c

The operation is entirely determined, then, via a#b = a. The answer is then simply 19.

-
difficult .. ll take some time..

r u sure about the question.

pl check once..
1
keywords: help,two,positive,real,number,Let,Let a,b two positive real number...................help
New
Hot
© 2008-2010 http://www.science-mathematics.com . Program by zplan cms. Theme by wukong .