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clear
x1=-1:1.3/9:0.3;
y1=0.3:-1.3/9:-1;
n=length(x1);
for i=1:n
    x(i)=acos(x1(i));
    y(i)=acos(y1(i));
end
for i=n+1:2*n;
    x(i)=x(i-n);
    y(i)=-y(i-n);
    i=i+1;
end
for i=2*n+1:3*n;
    x(i)=-x(i-2*n);
    y(i)=-y(i-2*n);
    i=i+1;
end
for i=3*n+1:4*n;
    x(i)=-x(i-3*n);
    y(i)=y(i-3*n);
    i=i+1;
end
plot(x,y)
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2Â¥2015-08-06 14:32:24
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

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cosx+cosy=-0.7
y=acos(-0.7-cosx)
acosº¯Êý¶¨ÒåÓòÔÚ[-1,1]
ÌÞ³ý-0.7-cosx<-1»ò-0.7-cosx>1¶ÔÓ¦µÄxµã£¬ÆäËûµã¼´ÎªËùÇó¡£
MATLAB¡¢MSСÎÊÌâ¡¢ÆÕͨÎÊÌâÇë·¢ÌûÇóÖú£¡Ê±¼ä¾«Á¦ÓÐÏÞ£¬Ë¡²»½ÓÊÜÎÞ³¥Ë½ÐÅÇóÖú¡£
3Â¥2015-08-07 13:38:13
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