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cos(a)^2,sin(a)^2·Ö±ð´ú±íD1½é×Ó³öÏÖ×ÔÐýΪ0ºÍ1µÄÁ½ÖÖ¸ÅÂÊ¡£Èç¹ûD*D1ºÍD*D2Á½¸ö½é×Ó·Ö×Ó̬¶ÔÒ»¸öËã·û½øÐÐñîºÏ(D1½é×ӵĴ¦ÓÚµþ¼Ó̬£¬ÆäÓàµÄ½é×ÓD*,D2¶¼´¦ÓÚÈ·¶¨µÄ±¾Õ÷̬ÉÏ£©£¬¼ÙÉèÕâ¸öËã·ûÊÇÊÆÄÜ, ¼´ÊÇ,
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ÔÚÏ£¶û²®ÌؿռäÖÐ: =C1*< ¦×1| ¦×3>+ C2*< ¦×2| ¦×3>
¶øÒÔÉÏËùÊöÏ൱ÓÚÒª½«Õ¹¿ª³É<¦×1 +¦×4| V|¦×3>
ºÍ<¦×2+¦×4| V|¦×3>µÄÏßÐÔ×éºÏ£¬Ç°ÃæµÄϵÊý¾ÍÏ൱ÓÚñîºÏϵÊý£¬¶øÕâ¸öñîºÏϵÊýµÄÐÎʽÊǺνâ,¸ù¾Ý³õµÈ±ä»»µÄ»°£¬ÕÒ²»µ½½â
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=cos(a)+sin(a)
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=cos(a)^2 + sin(a)^2 + 2cos(a)sin(a)   ;
2cos(a)sin(a)   Îª¸ÅÂʲ¨¸ÉÉæÏî

[ Last edited by janecool on 2010-12-3 at 16:26 ]
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