Question

如何使用MATLAB画椭球体及计算二重积分所围成区域?

Answer 1

1.画椭球体[X,Y,Z]=ellipsoid(0,0,0,1,2,3,100);

surf(X,Y,Z)%画图

2.求二重积分：程序如下y1=quad2d(@(x,y) exp(-x.^2-y.^2),0.5,2.5,@(x)0.5./x,@(x)sqrt(2.*x))%设b=1时结果y1 = 0.1241