根号64等于多少,求详解求过程
根号64=64^0.5设64^0.5=x两边同时取对数log64(64^0.5)=log64(x)0.5=log64x放在计算器里解出来就好了.绛旓細宸茬煡0<伪<蟺/2<尾<蟺,tan伪/2=1/2,cos(尾-伪)=(鏍瑰彿涓2)/10锛屾眰尾鐨勫. 绛旀鏄尾=3蟺/4锛屾眰杩囩▼ tan伪/2=1/2锛屾牴鎹竾鑳藉叕寮忥紝 sin伪=[2tan(伪/2)]/{1+[tan(伪/2)]^2} =4/5 cos伪=[1-tan(伪/2)^2]/{1+[tan(伪/2)]^2} =3/5 鑰岋細cos(伪-尾)=(cos伪...
绛旓細姝ら瑕佺敤閲嶅彔鐨勬柟娉曡绠椼傚厛绠椾袱涓¼鐨勫渾闈㈢Н鐩稿姞锛岀劧鍚庡噺鍘婚暱鏂瑰舰闈㈢Н灏辨槸闃村奖闈㈢Н銆傝绠楁柟娉曠湅鍒楀紡銆3.14脳锛8²+4²锛壝¼-8脳4 =3.14脳96脳¼-32 =75.36-32 =43.36cm²甯姪浣狅紝璋㈣阿閲囩撼
绛旓細瑙ｏ細鐢盇=鏍瑰彿涓((9n-1)/(n+7))寰楋細n=64/(9-A^2)-7 鍥犱负n鏄鏁存暟锛屾墍浠>0 鎵浠ワ紝n=64/(9-A^2)-7>0 鍗冲緱锛9-A^2>0锛屼笖9-A^2<64/7 瑙ｅ緱锛-3<A<3,鍥犱负A鈮0锛屾墍浠0鈮鈮3 鍥犱负n鏄鏁存暟锛屾墍浠64/(9-A^2)-7鏄鏁存暟锛屾墍浠64/(9-A^2)搴旇鏄暣鏁帮紝涓旇澶т簬7...
绛旓細浜.瑙ｇ瓟棰橈紙鏈ぇ棰樺叡4灏忛锛屾瘡灏忛15鍒嗭紝鍏60鍒嗭級瑕佹眰锛氬啓鍑杩囩▼ 13.鏈変竴鐗囪崏鍦猴紝鑽夋瘡澶╃殑鐢熼暱閫熷害鐩稿悓銆傝嫢14澶寸墰30澶╁彲灏嗚崏鍚冨畬锛70鍙緤16澶╀篃鍙皢鑽夊悆瀹岋紙4鍙緤涓澶╃殑鍚冭崏閲鐩稿綋浜1澶寸墰涓澶╃殑鍚冭崏閲忥級銆傞偅涔17澶寸墰鍜20鍙緤澶氬皯澶╁彲灏嗚崏鍚冨畬锛熻В锛氾紙1锛4鍙緤涓澶╃殑鍚冭崏閲忕浉褰撲簬1澶...
绛旓細鍦嗗埌鐩寸嚎鐨勮窛绂诲氨鏄鍦嗗績鍒扮洿绾胯窛绂诲噺鍘诲崐寰(1,1)鐐瑰埌鐩寸嚎璺濈鍏紡灏辨槸 l m-2+m+6 l / 鏍瑰彿涓嬶紙m鏂+4锛変笂涓嬮兘骞虫柟鍚庡寲绠寰 4锛坢鏂+4m+4)/(m鏂+4)=4+4*[4m/(m鏂+4)]4m/(m鏂+4)鐨勬渶澶у兼槑鏄炬槸1锛岃繖鏃秏鍙2鎵浠ユ渶澶у煎氨鏄湪m=2鏃朵骇鐢燂紝鍦嗗績鍒扮洿绾胯窛绂绘槸2鏍瑰彿2鍐嶅噺鍘诲崐寰...
绛旓細鍥犱负y鏄x棣栦綅鏁颁笌鏈熬鏁颁簰鎹紝鎵浠<9x,鈭歽<3鈭歺,x/2<3鈭歺,x<36,鎵浠鍜寉閮芥槸涓浣嶆暟鎴栦簩浣嶆暟銆傚洜涓衡垰y=x/2鏄湁鐞嗘暟锛屾墍浠鍙兘鏄1,4,9,16,25,36,49,64,81锛屽搴攛=2,4,6,8,10,12,14,16,18锛屾楠屽緱x=4鎴18
绛旓細瑙ｏ細鍦咰1锛歺²+y²-4x=0锛屽嵆锛氾紙x-2锛²+y²=4 鈭村渾蹇冿紙2锛0锛夛紝鍗婂緞r=2 鍦咰2锛歺²+y²-4x-60=0锛屽嵆锛氾紙x-2锛²+y²=64 鈭村渾蹇冿紙2锛0锛夛紝鍗婂緞R=8 鍦哅涓庡渾C1澶栧垏锛屼笌鍦咰2鍐呭垏锛屽垯锛屼笁涓渾鐨勫渾蹇冨缁堝湪鍚屼竴鏉＄洿绾夸笂 璁惧渾M鐨...
绛旓細姣忎釜闈㈤潰绉= 96梅6 = 16 杈归暱= 鏍瑰彿16 = 4 cm 浣撶Н =4 x 4 x 4 = 64 绔嬫柟鍘樼背 鐪嬪畬浜嗛噰绾冲摝~~绁濆涔犺繘姝ワ紒
绛旓細鎬佷笂
绛旓細璁剧偣P鍧愭爣鏄(x,y)PA=2PB PA^2=4PB^2 鍗虫湁:(x-12)^2+(y-16)^2=4[(x-3)^2+(y-4)^2]x^2-24x+144+y^2-32y+256=4x^2-24x+36+4y^2-32y+64 鍗虫湁:3x^2+3y^2=300 鍗宠建杩规柟绋嬫槸涓涓渾:x^2+y^2=100
