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function [fun1,fun2,fun3]=fun(a,b,c,x,y)
fun1=a.*x^3+b.*sin(x)+c.*y;
fun2=a.*b.*c.*x+y;
fun3=a.*x+b.*y+c;

µÚÒ»²½£ºÔÚa=1;b=2;c=3;x=4;ʱ½ö½ö»­³ö fun1,fun2
ÔÚy=[0:0.1:5]µÄÁ½ÌõÇúÏߣ¬ÇÒ»­ÔÚÒ»¸öͬһÕÅͼÖС£

µÚ¶þ²½£ºÔÚa=1;b=2;c=3;ʱ»­³öfun1,fun2,fun3,ÔÚ
x=[0:0.1:5];y=[0:0.1:5];Çø¼äÈý¸öº¯ÊýµÄÈýάͼ¡£

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jszhang

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3Â¥2011-04-14 20:12:29
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Сľ³æ(½ð±Ò+0.5):¸ø¸öºì°ü£¬Ð»Ð»»ØÌû½»Á÷
xiegangmai(½ð±Ò+1): ллӦÖú£¡ 2011-04-14 23:09:47
µÚÒ»²½£º>> y=[0:0.1:5];
>> [fun1,fun2,fun3]=fun(1,2,3,4,y);
>> plot(y,fun1)
>> hold on
>> plot(y,fun2)
>> hold off
µÚ¶þ²½µÄ½á¹û»¹Ã»ÅªºÃ
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2Â¥2011-04-14 19:58:11
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

jszhang

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[fun1,fun2,fun3]=fun(1,2,3,4,y);
plot(y,fun1);
hold on;
plot(y,fun2);
hold off
??? Undefined function or variable 'y'.
ÌáʾÈϲ»³ö£¬
4Â¥2011-04-14 20:20:26
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

xiegangmai

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Сľ³æ(½ð±Ò+0.5):¸ø¸öºì°ü£¬Ð»Ð»»ØÌû½»Á÷
ÒýÓûØÌû:
Originally posted by jszhang at 2011-04-14 16:54:51:
±ÈÈçÎÒÔÚÒ»¸ömÎļþÖÐдÁË

function [fun1,fun2,fun3]=fun(a,b,c,x,y)
fun1=a.*x^3+b.*sin(x)+c.*y;
fun2=a.*b.*c.*x+y;
fun3=a.*x+b.*y+c;

µÚÒ»²½£ºÔÚa=1;b=2;c=3;x=4;ʱ½ö½ö»­³ö fun1,fun2
ÔÚy=[0:0.1 ...

Ê×ÏÈÐèÒªÐÞ¸ÄÒ»ÏÂÄãµÄº¯Êý£º
CODE:
function [fun1,fun2,fun3]=fun(a,b,c,x,y)
fun1 = a *x .^  3 + b * sin(x) + c * y;
fun2 = a * b * c * x + y;
fun3 = a * x + b * y + c;

µÚÒ»¸öÎÊÌ⣺
CODE:
a = 1;
b = 2;
c = 3;
% ÎÊÌâ1
x = 4;
y = 0 : 0.1 : 5;
[ fun1, fun2, fun3 ] = fun( a, b, c, x, y );
plot( y, fun1 );
hold on
plot( y, fun2 );
plot( y, fun3 );

µÚ¶þ¸öÎÊÌ⣬Ӧ¸ÃÊÇ»­ÇúÃæÂð£¿
CODE:
% ÎÊÌâ2
a = 1;
b = 2;
c = 3;
[ x, y ] = meshgrid( 0 : 0.1 : 5 );
[ fun1, fun2, fun3 ] = fun( a, b, c, x, y );
figure
surf( x, y, fun1 );
hold on
surf( x, y, fun2 );
surf( x, y, fun3 );

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5Â¥2011-04-14 23:21:45
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
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