【正文】
eral methods for calculating the double integralCaoyangSchool of mathematics and statistics, Chifeng University, Chifeng 024000Abstract: Calculation of double integral is an important content of mathematical analysis, the calculation method of diversity, flexibility, this paper summarizes the general methods of calculating the double integral and special calculation method. Among them, the general calculation methods including double integral for the iterated integral and substitution method, symmetry, parity and double integral and integral method special calculation methods including application functions.Key words: The double integral integral symmetry of subsection integral method 12 。 極坐標下的換元法例5 計算二重積分,其中如圖(5)所示. 解