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yrqdwl

Òø³æ (³õÈëÎÄ̳)

[ÇóÖú] matlab surfº¯Êý

x=-2:0.5:2;y=-2:0.5:2;
[X,Y]=meshgrid(x,y);
Z=((585-9*(2*X+Y-1).^2).^0.5-9-2*X+4*Y)/5;
surf(X,Y,Z);
grid on;
shading flat
¿ÉÒÔÔËÐУ¬µ«ÊÇΪʲô¸ÄÏÂx y·¶Î§¾Í²»ÐÐÁËÄÇ£¿ÈçÏ£º
>>  x=-10:0.5:10;y=-10:0.5:10;
[X,Y]=meshgrid(x,y);
Z=((585-9*(2*X+Y-1).^2).^0.5-9-2*X+4*Y)/5;
surf(X,Y,Z);
grid on;
shading flat
??? Error using ==> surf at 70
X, Y, Z, and C cannot be complex.
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dbb627

ÈÙÓþ°æÖ÷ (ÖøÃûдÊÖ)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
Ó¦¸ÃÊÇx y·¶Î§((585-9*(2*X+Y-1).^2).^0.5ֵΪ¸´Êý£¬¾ÍÊÇ(585-9*(2*X+Y-1).^2<0
The more you learn, the more you know, the more you know, and the more you forget. The more you forget, the less you know. So why bother to learn.
2Â¥2012-03-23 17:11:04
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

yrqdwl

Òø³æ (³õÈëÎÄ̳)

ÒýÓûØÌû:
2Â¥: Originally posted by dbb627 at 2012-03-23 17:11:04:
Ó¦¸ÃÊÇx y·¶Î§((585-9*(2*X+Y-1).^2).^0.5ֵΪ¸´Êý£¬¾ÍÊÇ(585-9*(2*X+Y-1).^2<0

²»Êǰ¡µ³x=-3:0.05:3;
y=-3:0.05:3;
Ò²»á³öÏÖÕâ¸öÎÊÌ⣬Õâʱºò»¹ÊÇ´óÓÚ0µÄ°¡
3Â¥2012-03-23 17:23:06
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

dbb627

ÈÙÓþ°æÖ÷ (ÖøÃûдÊÖ)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

585-9*(2*X+Y-1).^2=585-9*£¨2*(-3)-3-1£©^2=585-900<0
The more you learn, the more you know, the more you know, and the more you forget. The more you forget, the less you know. So why bother to learn.
4Â¥2012-03-23 17:26:09
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
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