Posted by **Jess** on Saturday, October 19, 2013 at 1:09pm.

If a price-demand equation is solved for p, then price is expressed as p = g(x) and x becomes the independent variable. In this case, it can be shown that the elasticity of demand is given by E(x) = - [g(x) / xg'(x)]. Use the given price-demand equation to find the values of x for which demand is elastic and for which demand is inelastic.

p = g(x) = 12960 - 0.1x^2

I am really stuck on this question and don't know how to start, could someone please show me?

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