ÄÚÈÝ·¢²¼¸üÐÂʱ¼ä : 2025/7/11 15:50:56ÐÇÆÚÒ» ÏÂÃæÊÇÎÄÕµÄÈ«²¿ÄÚÈÝÇëÈÏÕæÔĶÁ¡£
2019°æ¸ß¿¼ÊýѧһÂÖ¸´Ï° µÚ3Õ Èý½Çº¯Êý¡¢½âÈý½ÇÐÎ 3.4 º¯Êýy
£½Asin(¦Øx£«¦Õ)µÄͼÏó¼°Ó¦Óÿκó×÷Òµ Àí
Ò»¡¢Ñ¡ÔñÌâ
1£®(2018¡¤ºÏ·ÊÖʼì)ÒªÏëµÃµ½º¯Êýy£½sin2x£«1µÄͼÏó£¬Ö»Ð轫º¯Êýy£½cos2xµÄͼÏó( )
¦Ð
A£®Ïò×óÆ½ÒÆ¸öµ¥Î»³¤¶È£¬ÔÙÏòÉÏÆ½ÒÆ1¸öµ¥Î»³¤¶È
4¦Ð
B£®ÏòÓÒÆ½ÒƸöµ¥Î»³¤¶È£¬ÔÙÏòÉÏÆ½ÒÆ1¸öµ¥Î»³¤¶È
4¦Ð
C£®Ïò×óÆ½ÒÆ¸öµ¥Î»³¤¶È£¬ÔÙÏòÏÂÆ½ÒÆ1¸öµ¥Î»³¤¶È
2¦Ð
D£®ÏòÓÒÆ½ÒƸöµ¥Î»³¤¶È£¬ÔÙÏòÏÂÆ½ÒÆ1¸öµ¥Î»³¤¶È
2´ð°¸ B
¦Ð??¦Ð??½âÎö ÏȽ«º¯Êýy£½cos2x£½sin?2?x£«??µÄͼÏóÏòÓÒÆ½ÒƸöµ¥Î»³¤¶È£¬µÃµ½y£½
4??4??sin2xµÄͼÏó£¬ÔÙÏòÉÏÆ½ÒÆ1¸öµ¥Î»³¤¶È£¬¼´µÃy£½sin2x£«1µÄͼÏ󣬹ÊÑ¡B.
¦Ð?¦Ð?2£®(2017¡¤¸£½¨Öʼì)Èô½«º¯Êýy£½3cos?2x£«?µÄͼÏóÏòÓÒÆ½ÒƸöµ¥Î»³¤¶È£¬ÔòÆ½ÒÆ2?6?ºóͼÏóµÄÒ»¸ö¶Ô³ÆÖÐÐÄÊÇ( )
A.?C.?
?¦Ð£¬0?
??6??¦Ð£¬0?
??12?
?¦Ð?B.?££¬0? ?6??¦Ð?D.?££¬0? ?12?
´ð°¸ A
¦Ð?¦Ð?½âÎö ½«º¯Êýy£½3cos?2x£«?µÄͼÏóÏòÓÒÆ½ÒƸöµ¥Î»³¤¶È£¬µÃy£½2?6?¦Ð?¦Ð¦Ðk¦Ð¦Ð??¦Ð?¦Ð??3cos?2?x£?£«?£½3cos?2x£«?µÄͼÏó£¬ÓÉ2x£«£½k¦Ð£«(k¡ÊZ)£¬µÃx£½£«(k6?2?6?6226???¦Ð?¦Ð?¡ÊZ)£¬µ±k£½0ʱ£¬x£½£¬ËùÒÔÆ½ÒƺóͼÏóµÄÒ»¸ö¶Ô³ÆÖÐÐÄÊÇ?£¬0?£¬¹ÊÑ¡A.
6?6?
?¦Ð?3£®½«º¯Êýy£½cos?x£?µÄͼÏóÉϸ÷µãµÄºá×ø±êÉ쳤µ½ÔÀ´µÄ2±¶(×Ý×ø±ê²»±ä)£¬ÔÙÏò
3??
¦Ð
×óÆ½ÒÆ¸öµ¥Î»£¬ËùµÃº¯ÊýͼÏóµÄÒ»Ìõ¶Ô³ÆÖáÊÇ( )
6
¦Ð¦Ð¦ÐA£®x£½ B£®x£½ C£®x£½¦Ð D£®x£½
462´ð°¸ D
2±¶?¦Ð?ºá×ø±êÉ쳤µ½ÔÀ´µÄ
½âÎö y£½cos?x£?¨D¨D¡úy£½ ×Ý×ø±ê²»±ä3??
1¦Ð?1?¦Ð?¦Ð?¦Ð???1¦Ð?1¦Ðx£cos?Ïò×óÆ½ÒÆ¸öµ¥Î»y£½cos??x£«?£?£¬¼´y£½cos?x£?.Áîx££½?6?3?3?4?264?2?2?2?
k¦Ð£¬k¡ÊZ£¬ÇóµÃx£½£«2k¦Ð£¬È¡k£½0£¬Ôòx£½.¹ÊÑ¡D.
¦Ð??¦Ð4£®(2018¡¤¹ãÖÝÄ£Äâ)½«º¯Êýf(x)£½sin(2x£«¦È)?£<¦ÈµÄͼÏóÏòÓÒÆ½ÒƦÕ(¦Õ>0)
2??2¸öµ¥Î»³¤¶ÈºóµÃµ½º¯Êýg(x)µÄͼÏó£¬Èôf(x)£¬g(x)µÄͼÏó¶¼¾¹ýµãP?0£¬ÒÔÊÇ( )
A.
5¦Ð5¦Ð¦Ð¦Ð
B. C. D. 3626
¦Ð
2¦Ð2
??3?
?£¬Ôò¦ÕµÄÖµ¿É2?
´ð°¸ B
¦Ð?¦Ð?½âÎö ÒòΪº¯Êýf(x)µÄͼÏó¹ýµãP£¬ËùÒԦȣ½£¬ËùÒÔf(x)£½sin?2x£«?.ÓÖº¯Êýf(x)3?3?µÄͼÏóÏòÓÒÆ½ÒƦոöµ¥Î»³¤¶Èºó£¬µÃµ½º¯Êýg(x)£½sin?35¦Ð?¦Ð?sin?£2¦Õ?£½£¬ËùÒÔ¦Õ¿ÉÒÔΪ£¬¹ÊÑ¡B.
6?3?2
5£®(2018¡¤ºþ±±µ÷ÑÐ)ÈçͼËùʾ£¬Ä³µØÒ»Ìì6¡«14ʱµÄζȱ仯ÇúÏß½üËÆÂú×㺯Êýy£½
?
?
x£¦Õ
¦Ð£«?µÄͼÏó£¬ËùÒÔ3??
Asin(¦Øx£«¦Õ)£«bµÄͼÏó£¬ÔòÕâ¶ÎÇúÏߵĺ¯Êý½âÎöʽ¿ÉÒÔΪ( )
¦Ð3¦Ð??x£«A£®y£½10sin?£«20£¬x¡Ê[6,14]
4??8?5¦Ð??¦Ð
B£®y£½10sin?x£«?£«20£¬x¡Ê[6,14]
4??83¦Ð??¦Ð
C£®y£½10sin?x£?£«20£¬x¡Ê[6,14]
4??85¦Ð??¦Ð
D£®y£½10sin?x£«?£«20£¬x¡Ê[6,14]
8??8´ð°¸ A
10£«3030£10T½âÎö ÓÉÈý½Çº¯ÊýµÄͼÏó¿ÉÖª£¬b£½£½20£¬A£½£½10£¬£½14£6£½8?T£½16
222
£½
2¦Ð¦Ð?¦Ð
?¦Ø£½£¬Ôòy£½10sin?x£«¦Õ¦Ø8?8?£«20£¬½«(6,10)´úÈëµÃ10sin?6¦Ð£«¦Õ?£«20£½10?
??8????
sin?
?3¦Ð£«¦Õ?£½£1?¦Õ£½3¦Ð£«2k¦Ð(k¡ÊZ)£¬È¡k£½0£¬¦Õ£½3¦Ð£¬¹ÊÑ¡A.
?44?4?
6£®(2015¡¤°²»Õ¸ß¿¼)ÒÑÖªº¯Êýf(x)£½Asin(¦Øx£«¦Õ)(A£¬¦Ø£¬¦Õ¾ùΪÕýµÄ³£Êý)µÄ×îС
2¦Ð
ÕýÖÜÆÚΪ¦Ð£¬µ±x£½Ê±£¬º¯Êýf(x)È¡µÃ×îСֵ£¬ÔòÏÂÁнáÂÛÕýÈ·µÄÊÇ( )
3
A£®f(2) 2¦Ð ½âÎö ¡ßf(x)£½Asin(¦Øx£«¦Õ)µÄ×îСÕýÖÜÆÚΪ¦Ð£¬ÇÒx£½ÊǾ¹ýº¯Êýf(x)×îСֵµã 32¦Ð¦Ð¦Ð µÄÒ»Ìõ¶Ô³ÆÖᣬ¡àx£½££½ÊǾ¹ýº¯Êýf(x)×î´óÖµµãµÄÒ»Ìõ¶Ô³ÆÖᣮ 326 12£¦Ð?¦Ð?¡ß?2£?£½ 6?6? £¬? ?¦Ð£ ? ¦Ð5¦Ð£12¦Ð?¦Ð?£?£½£¬?0£?£½£¬?6?6?66? ?¦Ð??¡à?2£?>?6??? ¦Ð£ ¦Ð?¦Ð?¦Ð2¦Ð¦Ð2¦Ð¦Ð2¦Ð £?>?0£?£¬ÇÒ£<2<£¬£<¦Ð£2<£¬£<0<£¬¡à?6??6?333333 f(2) ¦Ð??7£®(2018¡¤°²Ñô¼ì²â)ÒÑÖªº¯Êýf(x)£½sin(¦Øx£«¦Õ)?¦Ø>0£¬|¦Õ|µÄ²¿·ÖͼÏóÈçͼËù 2?? 2016 ʾ£¬Ôò¡Æf? n£½1 ?n¦Ð?£½( ) ??6? 1 A£®£1 B£®0 C. D£®1 2´ð°¸ B ¦Ð?¦Ð¦Ð¦Ð?½âÎö Ò׵æأ½2£¬ÓÉÎåµã·¨×÷ͼ¿ÉÖª2¡Á£«¦Õ£½£¬µÃ¦Õ£½£¬¼´f(x)£½sin?2x£«?.6?626?