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supratim7
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Re: If m, k, x and y are positive numbers...

by supratim7 Sat Aug 10, 2013 5:20 am

tim Wrote:However, on further reflection, I notice that your calculation actually wasn't as unhelpful as we both thought. Observe:

Process#2
mx + ky > kx + my ??
mx - kx + ky - my > 0 ??
x(m - k) + y(k -m) > 0 ??
x(m - k) - y(m - k) > 0 ??
(x - y)(m - k) > 0 ??

Notice how you had an (m-k) factor as well as a (k-m) factor. When you see this, you should factor out a -1 from one of these terms (it doesn't matter which one) so that you have two like terms and can factor further.


Yes ... this is what I was looking for :) Thank you so much Tim
RonPurewal
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Re: If m, k, x and y are positive numbers...

by RonPurewal Tue Aug 13, 2013 7:17 am

sweet