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Eklimur Raza

It appears some students in this website are confused about elasticity of demand and the slope of the demand curve when they are trying to figure out why rectangular hyperbola comes up in case of unitary demand curve. First, they don't know that RH can be depicted in a positive quadrant of price,quantity plane. Secondly, they make the mistake that the slope of RH is constant at -1. Two points could help them: first, e=1 at each and every point of the RH, because the tangent at any point shows lower segment=upper segment (another geometric definition of e); yet slopes at different points,dQ/dP, are different; second, e is not slope but [(Slope)(P/Q)]in absolute terms. Caveat: only if we measure (log P) along the horizontal axis and (log Q) up the vertical axis, can we then say slope equals elasticity --in which case RH on P,Q plane is transformed into a straight-line demand curve [with slope= -tan 45 deg] on (log Q),(logP) plane, and e= -d(log Q)/d(log P). [By the way, logs are not used in college textbooks --although that is helpful in econometric estimation of elasticity viewed as an exponent of P, when demand equation is .....


Basically a B.Sc (Physics) from the University of Madras, India. Started the career in production engineering under German and Italian experts. MBA in Management from IIM, Ahmedabad (India). Ph.D (Management) from the University of Bomaby (the first ever awarded in this subject). Headed the computer centres of Multi nationals; "Data Processing expert" of the Commonwealth, London (To implement World Bank and UNDP Computer softwares); "Consultant Adviser" to the Caribbean Development Bank (CDB), Barbados. Associated with Nobel Laureate in Economic Science-1979, Arthur Lewis (Past President of CDB) & 4 more on his introduction. Visiting professor to many universities. A Trained ISO 9001:2000 Quality Auditor. Over 40 years of combined experience in Accounts, Computer Software, Economics, Engineering, Management, Science, Technology, Research & Development and Qulaity systems. Author of over 60 Application Research papers. Currently a free-lance consultant in ISO Quality Systems, Socio-Economic development acceleration, Innovative software designs. Can answer any question in Theoritical/Applied-economics with an in-depth and innovative dimension. I DO NOT ANSWER : 1. STATISTICAL data & analysis. 2. PRIVATE questions, as they do not appear for PUBLIC view & search 3. Examination & Project report oriented questions. Website


I will be happy to answer questions related to applied economics. i.e. economics applied to small businesses and on our day to day existence.

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