OEF ÕûÊý·Ö½â
--- ½éÉÜ ---
±¾Ä£¿éÄ¿Ç°°üº¬ 14 ¸ö¹ØÓÚÕûÊýÒòʽ·Ö½âµÄ³õµÈÁ·Ï°:
´æÔÚÐÔ, ΨһÐÔ, ¹ØÓÚ gcd ºÍ lcm µÄ¹ØϵµÈ.
Òò×ÓÊý
¸ø³öÒ»¸öÕûÊý
ËüÇ¡ÓÐ ¸öÒò×Ó (1 ºÍ Ò²ÊÇ µÄÒò×Ó) ¶øÇÒËüÖÁÉÙ±» ¸ö²»Í¬ËØÊý³ý¾¡.
ÕûÊýµÄÒò×Ó
ÉèÕûÊý
Ç¡ÓÐ 3 ¸ö²»Í¬ËØÊýÒò×Ó :
ÒÑÖª
±È
¶à ¸öÒò×Ó, ²¢ÇÒ
±È
¶à ¸öÒò×Ó.
¸ø³ö
µÄËùÓпÉÄÜÐÔ : Çë°´
µÄÔö³¤´ÎÐòÒ»ÐÐдһ¸ö½â
,
,
(ÒÔ¶ººÅ·Ö¸ô).
Òò×Ó
ÓÐÒ»¸öÕûÊý , ÆäÒòʽ·Ö½âΪ = . ÒÑÖª Õû³ý , µÈÓÚʲô?
Òòʽ·Ö½âÖ®ºÍ
Éè ºÍ ÊÇÁ½¸öÕý, Ëü¾ßÓÐÈçÏÂÒòʽ·Ö½â: = 123 , = 124 , ÆäÖÐÒò×Ó i ÊDz»Í¬µÄËØÊý.
ÊÇ·ñ¿ÉÄÜÓÐÐÎÈç
| | = 123 , µÄ·Ö½âÆäÖÐ i ÊDz»Í¬µÄËØÊý?
ÇóÒò×Ó II
ÓÐÁ½¸öÕûÊýµÄËØÒò×Ó·Ö½âʽ: = , = , ÆäÖÐÒò×Ó , ÊDz»Í¬ËØÊý. ÇóÕâЩÒò×Ó.
ÇóÒò×Ó III
ÓÐÁ½¸öÕûÊýµÄËØÒò×Ó·Ö½âʽ: = , = , ÆäÖÐÒò×Ó , , ÊDz»Í¬ËØÊý. ÇóÕâЩÒò×Ó.
×î´ó¹«ÒòÊý
Éè m, n ÊÇÓÐÒÔÏÂÒòʽ·Ö½âʽµÄÁ½¸öÕýÕûÊý. m = , n = , ÆäÖÐ , , ÊDz»Í¬ËØÊý.
¼ÆËã gcd(m,n) ×÷Ϊ , , µÄº¯Êý.
×îС¹«±¶Êý
Éè m, n ÊÇÓÐÒÔÏÂÒòʽ·Ö½âʽµÄÁ½¸öÕýÕûÊý. m = , n = , ÆäÖÐ , , ÊDz»Í¬ËØÊý.
¼ÆËã lcm(m,n) ×÷Ϊ , , µÄº¯Êý.
ËØÒò×Ó×î¶à¸öÊý
Éè ÊÇ Î»ÕûÊý. ÒÑÖª ûÓÐ < µÄËØÒò×Ó, ×î¶à¿ÉÄÜÓжàÉÙ¸öËØÒò×Ó ?
Òò×ÓÊý II
Éè ÊǾßÓÐÒÔϵ½²»Í¬ËØÒò×Ó·Ö½âµÄÕýÕûÊý. = 1 2 µÄÒò×Ó¸öÊýÊǶàÉÙ ? ( µÄÒò×ÓÊdzý¾¡ µÄÕýÕûÊý, °üÀ¨ 1 Óë ÔÚÄÚ.)
Òò×ÓÊý III
Éè ÊǾßÓÐÒÔϵ½²»Í¬ËØÒò×Ó·Ö½âµÄÕýÕûÊý. = 1 2 3 µÄÒò×Ó¸öÊýÊǶàÉÙ ? ( µÄÒò×ÓÊdzý¾¡ µÄÕýÕûÊý, °üÀ¨ 1 Óë ÔÚÄÚ.)
ÊÔ³ý
ÎÒÃÇÓÐÒ»¸öÕûÊý < , ¶øÇÒÒªÓÃÖð´ÎÒÔ 2,3,4,5,6,... ÊÔ³ý µÄ·½·¨ÕÒ³ö µÄËØÒò×Ó. ÒÑÖª ÓÐÒ»¸öËØÒò×Ó·Ö½â = 11 22 ... tt ÆäÖÐÖ¸ÊýÖ®ºÍ 1+2+...+t = , (µ«ÊÇÒò×Ó i ²»ÖªµÀ) ÄÇôÔÚ×µÄÇéÐÎÄãÒªÊÔ³ýµÄ×î´óÒò×ÓÊǶàÉÙ (²»Ð迼ÂÇ´ËÒò×ÓÊÇ·ñËØÊý) ?
Á½¸öÒò×Ó
¼ÆËã¾ßÓÐÐÎΪ = × , µÄËØÒò×Ó·Ö½âµÄÕýÕûÊý < µÄ¸öÊý, ÕâÀïµÄÖ¸Êý ºÍ ÊÇ > µÄÕûÊý.
Á½¸öÒò×Ó II
¼ÆËã¾ßÓÐÐÎΪ = × , µÄËØÒò×Ó·Ö½âµÄÕýÕûÊý < µÄ¸öÊý, ÕâÀïµÄÖ¸Êý ºÍ ÊÇ > µÄÕûÊý.
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ÓÉÓÚ WIMS ²»ÄÜʶ±ðÄúµÄä¯ÀÀÆ÷, ±¾Ò³²»ÄÜÕý³£ÏÔʾ.
Çë×¢Òâ: WIMS µÄÍøÒ³Êǽ»»¥Ê½µÄ: ËüÃDz»ÊÇͨ³£µÄ HTML Îļþ. Ö»ÄÜÔÚÏß½»»¥µØ
ʹÓÃ. ÄúÓÃ×Ô¶¯»¯³ÌÐòÊÕ¼¯µÄÍøÒ³ÊÇÎÞÓõÄ.
- Description: Ò»×é¹ØÓÚÕûÊýÒòʽ·Ö½âµÄ³õµÈÁ·Ï°. exercises interactifs, calcul et tracé de graphes en ligne
- Keywords: interactive mathematics, interactive math, server side interactivity, algebra, arithmetic, number theory, prime, prime factorization, integer, factor, gcd,lcm