We want to prove that . Proof: . . Does this look right? I drew a number line and used 'intuitive reasoning' to show that it is true. Thanks
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Originally Posted by shilz222 We want to prove that . Forward. If then thus, . Argue by contradiction, say then choosing . This leads to contradiction, why? Converse. If then , but then . Thus . Thus .
contradicts the fact that .
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