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d2rockstar

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tT
发表于 2013-4-28 08:10 | 只看该作者

triangular arbitrage and implied cross rates question

examples, question, something, set
Quick question, on p.489 in CFAi book in the second paragraph (2nd arbitrage constraint) they set the ratios so that to get a/c u need to have a/b and c/b….. but in all the examples its usually set up so that the relationship is a/c=(a/b)(b/c) and u can cancel out currency b (this is for questions without inverting) …. so  my question is: is the paragraph wrong? Or am i missing something? Sorry for any typos im on my tablet and it sucks to type
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Kiakaha

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2#
发表于 2013-4-28 08:10 | 只看该作者
If you changed your avatar I might actually be able to focus on your question.

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jbaldyga

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3#
发表于 2013-4-28 08:11 | 只看该作者
Incentive: answer my question and ill tell u her name? Lol

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spartanag07

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4#
发表于 2013-4-28 08:11 | 只看该作者
Well, I don’t have the books with me, but clearly you can’t cross multiply and cancel with the ratios you have stated.  You would have to take the inverse of C/B to get to B/C and cancel out the “B’s”.

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cfalevel2011

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5#
发表于 2013-4-28 08:11 | 只看该作者
jyk026 wrote:
Quick question, on p.489 in CFAi book in the second paragraph (2nd arbitrage constraint) they set the ratios so that to get a/c u need to have a/b and c/b….. but in all the examples its usually set up so that the relationship is a/c=(a/b)(b/c) and u can cancel out currency b (this is for questions without inverting) …. so  my question is: is the paragraph wrong? Or am i missing something? Sorry for any typos im on my tablet and it sucks to type
…you have a tablet?…showoff!

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