# Calculus

posted by
**Sarah**
.

For the demand function find the elasticity function.

Problem 52.

p=D(x)=18-Sqrt[x]

My answer is [-36x^1/2 + 2x]/x

However, the answer in book is [-2(18-x^1/2)]/[x^1/2]

posted by
**Sarah**
.

For the demand function find the elasticity function.

Problem 52.

p=D(x)=18-Sqrt[x]

My answer is [-36x^1/2 + 2x]/x

However, the answer in book is [-2(18-x^1/2)]/[x^1/2]