求 (int_0^1 int_0^1 int_0^1 sin(pi x_1 x_2 x_3) dx_1 dx_2 dx_3)
(int_0^1 int_0^1 int_0^1 sin(pi x_1 x_2 x_3) dx_1 dx_2 dx_3)
代码是:
triplequad(@(x,y,z)sin(pi*x*y*z), 0,1,0,1,0,1)