刘同学2019-10-29 22:43:18

The market demand function for four-year private universities is given by the equation Where is the number of applicants to private universities per year in thousands, Ppr is the average price of private universities (in thousands of USD), I is the household monthly income (in thousands of USD), and Ppu is the average price of public (government-supported) universities (in thousands of USD). Assume that Ppr is equal to 38, I is equal to 100, and Ppu is equal to 18. The cross-price elasticity of demand for private universities with respect to the price of public universities is closest to: 老师您好，这里我看到“The cross-price elasticity of demand for private universities with respect to the price of public universities is closest to”， 这句话怎么理解，课件上讲的听不清楚，再就是斜率为啥不是-3.1？