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A锛氳浣忚繖涓€?strong>鈥嬮粍閲戜笁瑙掓硶鍒欌€?/strong>鈥嬶細

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2. 鈥?strong>鈥嬧垰(a虏+x虏)鈥?/strong>鈥?鈫?鍙敜鈥?strong>鈥嬫鍒囧繊鑰呪€?/strong>鈥?x=a路tan胃
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   锛堜笓娌诲悇绉嶅弻鏇茬嚎鍨嬬Н鍒嗭級

涓句釜馃尠锛氣埆鈭?9-x虏)dx
馃憠璁緓=3sin胃锛宒x=3cos胃d胃锛屸垰(9-x虏)=3cos胃
鍘熷紡绉掑彉鈭?cos胃路3cos胃d胃=9鈭玞os虏胃d胃锛屽啀鐢ㄥ崐瑙掑叕寮忓垎鍒嗛挓鎼炲畾

鏍瑰紡浠ｆ崲鐨勪竾鑳介挜鍖?馃棟锔?/h3>

Q锛氭牴鍙烽噷涓嶆槸浜屾椤规€庝箞鍔烇紵

A锛氳繖鏃跺€欓渶瑕佲€?strong>鈥嬩唬鏁板彉褰?鎹㈠厓浜岃繛鍑烩€?/strong>鈥嬶細

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3. 鈥?strong>鈥嬪垎寮忔牴寮忊€?/strong>鈥嬶細鍒嗘瘝甯︽牴鍙风殑锛屽厛鏈夌悊鍖栧啀鎹㈠厓

鐪嬩釜瀹炴垬妗堜緥锛氣埆x鈭?x-2)dx
馃憠浠=鈭?x-2)鈫抶=t虏+2鈫抎x=2tdt
鍘熷紡=鈭?t虏+2)路t路2tdt=2鈭?t鈦?2t虏)dt锛屾瘮鍠濆ザ鑼惰繕涓濇粦

浜屻€佽繖浜涘潙鎴戞浛浣犺俯杩囦簡锛侌煔?/h2>

鍦烘櫙1锛氭崲瀹屽彉閲忕Н鍒嗛檺涓嶄細鍙樹簡锛?/h3>

• 鈥?strong>鈥嬪畾绉垎蹇呯湅鈥?/strong>鈥嬶細鎹㈠厓蹇呴』鍚屾鏀逛笂涓嬮檺锛?br/> 姣斿x浠?鍒癮鎹㈡垚胃鏃讹紝胃鑼冨洿瑕佸搴旀垚-蟺/2鍒跋€/2锛堟寮︿唬鎹級
• 鈥?strong>鈥嬪洖浠ｇ炕杞︾幇鍦衡€?/strong>鈥嬶細绠楀畬胃鐨勭Н鍒嗗埆蹇樼敤鍙嶄笁瑙掑嚱鏁板彉鍥瀤锛屾瘮濡偽?arcsin(x/a)

鍦烘櫙2锛氫笁瑙掍唬鎹㈠悗鍑虹幇sec鲁胃鎬庝箞鐮达紵

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涓夈€佷粠闈掗摐鍒扮帇鑰呯殑杩涢樁璺嚎 馃弳

1. 鏂版墜鏉戜换鍔★紙蹇呭埛棰樺瀷锛?/h3>

绫诲瀷	渚嬮	鐮磋В瀵嗙爜
浜屾鏍瑰紡	鈭玠x/鈭?x虏+4x+5)	閰嶆柟鎴愨垰((x+2)虏+1)鍚庣敤姝ｅ垏浠ｆ崲
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涔樼Н鏍瑰紡	鈭玿鲁鈭?1-x虏)dx	娣峰悎浠ｆ崲锛氬厛u=1-x虏鍐嶄笁瑙掍唬鎹?/td>

2. 楂樻墜璇曠偧鍦猴紙缁勫悎鎶€鎸戞垬锛?/h3>

• 鈥?strong>鈥嬩笁瑙?鍒嗛儴绉垎鈥?/strong>鈥嬶細鈭玿虏鈭?1-x虏)dx
  鍏堣x=sin胃锛屽啀瀵刮嘎瞔os虏胃鐢ㄥ垎閮ㄧН鍒?/li>
• 鈥?strong>鈥嬪弻閲嶆崲鍏冣€?/strong>鈥嬶細鈭垰(x+鈭?x虏+1))dx
  鍏堜护t=鈭?x虏+1)锛屽啀璁緐=t+x

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鍥涖€佽€佸笀涓嶄細鍛婅瘔浣犵殑瀹炴垬绉樼睄 馃挕

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鐙鏁版嵁锛?5%鐨勬牴寮忕Н鍒嗗彲鐢ㄦ爣鍑嗕唬鎹㈣В

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闂叧棰樺寘锛堢瓟妗堣棌鍦ㄤ笅鏈燂級

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2. 鈭垰(e耍-1)dx 锛堣瘯璇曚护t=鈭?e耍-1)锛?/li>
3. 鈭玠x/(x虏鈭?x虏-4)) 锛堟鍓蹭唬鎹㈢粡鍏搁锛?/li>

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鉁?寰垎杞崲鏈夋病鏈夋紡鎺夌郴鏁帮紵
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