Focus and write a paper on marginal utility, price elasticity of demand, and understanding the difference between price elasticity of demand and income elasticity of demand.

Price elasticity of demand and income elasticity of demand. Focus and write a paper on marginal utility, price elasticity of demand, and understanding the difference between price elasticity of demand and income elasticity of demand.  

Income function: Create a function that takes parameters for the demand function, and which visualizes the income function, marginal income and price elasticity, and which identifies where the demand function is elastic, neutral-elastic and inelastic.

Income function Create a function that takes parameters for the demand function, and which visualizes the income function, marginal income and price elasticity, and which identifies where the demand function is elastic, neutral-elastic and inelastic.