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HHemraj7y ago
Sir, in question 3a of Dec 2010 paper, the requirement suggested an assumption of delta to be N(-d1). Using this or N(d1) produces a different answer. So, could you please explain the difference between N(-d1) and N(d1)? And can I use this assumption for valuing call or put options? Thanks
John MoffatJohn MoffatTutor7y ago#1
The difference is that you either look up the value of +d1 or -d1 in the tables, and I explain exactly how to do this in my free lectures - please do not expect me to type out my lectures here :-) You are not expected to use this assumption yourself - when it is needed then the question tells you do it (as this question does).
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