# Inequalities

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• May 7th 2010, 04:46 PM
s3a
Inequalities
Can someone remind me of the rules please? When do I switch the inequality? When don't I?

Any input would be GREATLY appreciated!
Thanks in advance!
• May 7th 2010, 04:57 PM
skeeter
Quote:

Originally Posted by s3a
Can someone remind me of the rules please? When do I switch the inequality? When don't I?

Any input would be GREATLY appreciated!
Thanks in advance!

Inequalities
• May 7th 2010, 05:01 PM
slovakiamaths
you will switch the ineqality if
(i) multiply by a -ve sign
(ii) inverse the relation

for example: (i) 5 <6 but -5>-6
(ii) $\frac{3}{2}>\frac{1}{3}$
but $\frac{2}{3} <\frac{3}{1}$(Happy)