我有一个程序，代码如下：clcclear allk=0.2;an=20*pi/180;syms faii12=(1-2*k*cos(3*fai)+k*k)/(1-k*k);dt1=atan(1/i12);ddt1=diff(dt1);dddt1=diff(ddt1);p=(-(sin(dt1)^2+ddt1^2)^1.5)/(cos(dt1)*sin(dt1)^2+2*cos(dt1)*ddt1^2-sin(dt1)*dddt1);mpy=zeros(361,1);i=1;for fai=0*pi/180:1*pi/180:360*pi/180;mpy(i,1)=pi=i+1;end运行结果： ??? Conversion to double from sym is not possible.Error in ==> miqieyuan at 15mpy(i,1)=p
谢谢各位大侠了
