Research on the automatic calculation of surface area integrals

To address the issue that existing double integral calculators cannot calculate surface integrals, a method of converting surface integral input modes into double integral input modes is proposed. First, nine input modes for calculating double integrals are presented. Next, a method for converting surface integral input modes into double integral input modes is designed. Finally, a method for calculating surface integrals using a double integral calculator is designed. Experimental results show that the improved double integral calculator can calculate surface integrals.