(In the mobile communication office, there is a certain substitution effect between the SMS service and the voice service, which will have a certain impact on the total revenue of the operator. How to price the two services to prevent SMS from replacing the voice service in order to maximize corporate income is everyone's concern Pay attention. In connection with the actual situation in China, this study establishes a quantitative model for the use of SMS and voice, a mathematical model for mobile operating income, and a mathematical model for SMS and voice.)
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