11.2 Classical Economic Growth Theory ■ Basic Presumption Long-term growth trend upward inclined curve Y(GDP) indicates the continuing increase in the potential producing ability. In the short term it can be a little C deviated, such as a。 Two coefficients can be used to describe: slope intercept A 复学终济学院11.2 Classical Economic Growth Theory ◼ Basic Presumption Y(GDP) t Long-term growth trend: upward inclined curve indicates the continuing increase in the potential producing ability. In the short term it can be a little deviated，such as A。 Two coefficients can be used to describe: slope , intercept。 A B C