# Find price demand equation to find E(p) given the demand function x = 160 - 35*ln p

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The price demand function is `x = 160 - 35*ln p`

Price elasticity of demand is the change in demand for a unit change in the price. As the price function is a continuous one, `E(p) = (dx)/(dp)`

`(dx)/(dp) = -35/p`

**The price elasticity of demand is **`E(p) = -35/p`

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