[MATLAB数学相关] 一个貌似很简单但是我不会的问题 - MATLAB爱好者论坛-LabFans.com

hly-neu · 2009-05-14, 10:03

key1=[10000 10000];
i=1;
syms s1=0 s2=0 D=0;
e=4-sqrt(3);
n=1;
R=1;
c=pi./6;
h=4;
for r=[0:0.05:10]
for b=[0

i./20:2*pi]
for a=[0

i./20:2*pi]
y=(1./(2.*pi.*pi.*10.*10.*(((n+1)./(4.*pi.*pi)).*((((e-0.*sin(b)).*(sin(c))+h.*cos(c)).^n*((h-R.*sin(a).*sin(c))))./(((0.*cos(b)-R.*cos(a)).^2+((0.*sin(b)-e).*cos(c)+(h.*sin(c))-R.*sin(a)).^2+((e-0.*sin(b)).*sin(c)+h.*cos(c)).^2).^2))).^((n+3)./2))).*(((((n+1)./(4.*pi.*pi)).*((((e-r.*sin(b)).*(sin(c))+h.*cos(c)).^n*((h-R.*sin(a).*sin(c))))./(((r.*cos(b)-R.*cos(a)).^2+((r.*sin(b)-e).*cos(c)+(h.*sin(c))-R.*sin(a)).^2+((e-r.*sin(b)).*sin(c)+h.*cos(c)).^2).^2))).^((n+3)./2)));
s=(pi./20).*sum(y);
end
k=(pi./20).*sum(s);
end
D=(k.^2).*r.*0.05;
key1(i)=D;
i=i+1;
end

??? Error using ==> syms at 58
Not a valid variable name.
为什么运行程序是总是提示上面的错误啊？
哪位高手帮忙解决一下呗，谢谢！！！

2009-05-14, 10:03	#1
hly-neu 初级会员注册日期: 2008-09-27 年龄: 39 帖子: 2 声望力: 0	一个貌似很简单但是我不会的问题 key1=[10000 10000]; i=1; syms s1=0 s2=0 D=0; e=4-sqrt(3); n=1; R=1; c=pi./6; h=4; for r=[0:0.05:10] for b=[0i./20:2pi] for a=[0i./20:2pi] y=(1./(2.pi.pi.10.10.(((n+1)./(4.pi.pi)).((((e-0.sin(b)).(sin(c))+h.cos(c)).^n((h-R.sin(a).sin(c))))./(((0.cos(b)-R.cos(a)).^2+((0.sin(b)-e).cos(c)+(h.sin(c))-R.sin(a)).^2+((e-0.sin(b)).sin(c)+h.cos(c)).^2).^2))).^((n+3)./2))).(((((n+1)./(4.pi.pi)).((((e-r.sin(b)).(sin(c))+h.cos(c)).^n((h-R.sin(a).sin(c))))./(((r.cos(b)-R.cos(a)).^2+((r.sin(b)-e).cos(c)+(h.sin(c))-R.sin(a)).^2+((e-r.sin(b)).sin(c)+h.cos(c)).^2).^2))).^((n+3)./2))); s=(pi./20).sum(y); end k=(pi./20).sum(s); end D=(k.^2).r.0.05; key1(i)=D; i=i+1; end ??? Error using ==> syms at 58 Not a valid variable name. 为什么运行程序是总是提示上面的错误啊？哪位高手帮忙解决一下呗，谢谢！！！