Latex如何写二重积分、三重积分、四重积分、n重积分、闭合积分
1. 不定积分\int f(x)dx$$\int f(x)dx$$2. 二重积分\iint f(x,y)d\sigma$$\iint f(x,y)d\sigma$$3. 三重积分\iiint f(x,y,z)dV$$\iiint f(x,y,z)dV$$4. 四重积分\iiiint f(x_{1},x_{2},x_{3},x_{4})dx_{I}$$\iiiint f(x_{1},x_{2},x_{3},x_{4})dx_{I}$$5. n重积分\underbrace{\idotsint}_{n}f(x_{1},x_{2}, \cdot\cdot\cdot, x_{n})dx_{I}$$\underbrace{\idotsint}_{n}f(x_{1},x_{2}, \cdot\cdot\cdot, x_{n})dx_{I}$$下面指令使用前,需要先调用\usepackage{esint}宏包。6. 闭合曲线积分\oint\limits_{C} f(x)dx$$\oint\limits_{C} f(x)dx$$7. 闭合曲面积分\oiint f(x,y)dxdy
\varoiint ...