Since the dollarization in Ecuador, the interest rate and investment rate has picked up as the economy grows. The present research explains the behavior of the investment as a function of the interest rates, through the neoclassical theory of Jorgenson. This model argues that to maximize corporate profits, it is necessary to define a production function consistent with the maximization principle. The research looks for a positive relationship between the product (Y) and the private investment

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... P). In this context, the real interest rate (ir), which represents the cost of the use of capital, has a negative relation according to the empirical evidence in favor of Jorgenson's neoclassical theory.