[geraint12]

m=10:40;
x1=35+10*log(200000);
y1=exp((1/3)*log(100*m/(0.00003-100*x1)));
x=y1+100;
n=(30-30*log(x)+40)/6;
syms n x
z=int(1-(1/15)*exp(-(n.^2/72)),0,x);
axis([10,40,0,1]);
plot(m,z,'r')



输出有问题
??? Error using ==> plot
Conversion to double from sym is not possible.
求教高手帮忙解答 谢谢