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mei3014

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ÒýÓûØÌû:
3Â¥: Originally posted by baobiao007 at 2012-09-03 15:26:04
Èç¹ûÖªµÀÕâ3¸öÇúÏßµÄÃ÷È·º¯Êý¹ØÏµÊ½£¬¿ÉÒÔÓÃfzeroÃüÁî½â³ö¸ù¡£
±ÈÈ磺Çóy=x^2  Óë y=30µÄ½»µã

a=-10:10;
y=a.^2;
plot(a,y);
hold on;
x1=fzero(@funcy,-6);
x2=fzero(@funcy,6);
scatter(x1,x1^2,'r');
...

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4Â¥2012-09-03 18:19:50
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2Â¥2012-09-03 15:20:58
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baobiao007

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mei3014: ½ð±Ò+5, ¡ï¡ï¡ïºÜÓаïÖú, ÄãµÄ˼·ÎÒÏëµ½¹ý£¬µ«ÓÃÔÚÎÒÕ⺯ÊýºÍÇúÏßÉÏʵʩÆðÀ´²»ÊǺܷ½±ã!²»¹ý»¹ÊÇллÄãµÄ»ØÌû£¡ 2012-09-04 15:02:25
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±ÈÈ磺Çóy=x^2  Óë y=30µÄ½»µã

a=-10:10;
y=a.^2;
plot(a,y);
hold on;
x1=fzero(@funcy,-6);
x2=fzero(@funcy,6);
scatter(x1,x1^2,'r');
scatter(x2,x2^2,'r');

function y=funcy(x)
y=x^2-30;
end
ÎÒͬÒâÊå±¾»ªµÄ¹Ûµã£¬ÈËÃÇͶÉíÒÕÊõºÍ¿ÆÑ§ÁìÓòµÄÇ¿ÁÒÔ¸ÍûÖ®Ò»¾ÍÊÇÌÓÀëÍ´¿à¡¢²Ð¿áºÍ¿ÝÔïÎÞζµÄÏÖʵÉú»î£¬ÌÓÀë×Ô¼ºÆ®ºö²»¶¨µÄÆßÇéÁùÓûµÄèäèô¡£--°®Òò˹̹
3Â¥2012-09-03 15:26:04
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

mei3014

½ð³æ (ÕýʽдÊÖ)

ľÓÐͷм

ÒýÓûØÌû:
3Â¥: Originally posted by baobiao007 at 2012-09-03 15:26:04
Èç¹ûÖªµÀÕâ3¸öÇúÏßµÄÃ÷È·º¯Êý¹ØÏµÊ½£¬¿ÉÒÔÓÃfzeroÃüÁî½â³ö¸ù¡£
±ÈÈ磺Çóy=x^2  Óë y=30µÄ½»µã

a=-10:10;
y=a.^2;
plot(a,y);
hold on;
x1=fzero(@funcy,-6);
x2=fzero(@funcy,6);
scatter(x1,x1^2,'r');
...

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5Â¥2012-09-03 18:55:44
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