MBA鏁�(sh霉)瀛�(xu茅)涔嬪繀鍌欏叕寮�
鐎忚
鏀惰棌
銆€銆€銆愭憳瑕併€慚BA鏁�(sh霉)瀛�(xu茅)鍌欒€冩槸寰堝瀛�(xu茅)鍝＄殑闆ｉ锛屽皬绶ㄧ偤澶у绮惧績婧栧倷浜嗕竴浜涘繀鍌欏叕寮忥紝瀛�(xu茅)鍝″繀闋堟渻闈堟椿閬嬬敤銆�
銆€銆€涓夎鍑芥暩(sh霉)锛�
銆€銆€鍏╄鍜屽叕寮�
銆€銆€sin(A+B)=sinAcosB+cosAsinB
銆€銆€sin(A-B)=sinAcosB-sinBcosA
銆€銆€cos(A+B)=cosAcosB-sinAsinB
銆€銆€cos(A-B)=cosAcosB+sinAsinB
銆€銆€tan(A+B)=(tanA+tanB)/(1-tanAtanB)
銆€銆€tan(A-B)=(tanA-tanB)/(1+tanAtanB)
銆€銆€ctg(A+B)=(ctgActgB-1)/(ctgB+ctgA)
銆€銆€ctg(A-B)=(ctgActgB+1)/(ctgB-ctgA)
銆€銆€鍊嶈鍏紡
銆€銆€tan2A=2tanA/(1-tan2A)
銆€銆€ctg2A=(ctg2A-1)/2ctga
銆€銆€cos2a=cos2a-sin2a=2cos2a-1=1-2sin2a
銆€銆€鍗婅鍏紡
銆€銆€sin(A/2)=√((1-cosA)/2)
銆€銆€cos(A/2)=√((1+cosA)/2)
銆€銆€tan(A/2)=√((1-cosA)/((1+cosA))
銆€銆€ctg(A/2)=√((1+cosA)/((1-cosA))
銆€銆€鍜屽樊鍖栫⿳
銆€銆€2sinAcosB=sin(A+B)+sin(A-B)
銆€銆€2cosAsinB=sin(A+B)-sin(A-B)
銆€銆€2cosAcosB=cos(A+B)-sin(A-B)
銆€銆€2sinAsinB=cos(A+B)-cos(A-B)
銆€銆€sinA+sinB=2sin((A+B)/2)cos((A-B)/2
銆€銆€cosA+cosB=2cos((A+B)/2)sin((A-B)/2)
銆€銆€tanA+tanB=sin(A+B)/cosAcosB
銆€銆€tanA-tanB=sin(A-B)/cosAcosB
銆€銆€鐠�(hu谩n)鐞冪恫(w菐ng)鏍″弸鎯呮彁绀�锛氱挵(hu谩n)鐞冪恫(w菐ng)鏍″湪鑱风爺绌剁敓鑰冭│闋婚亾鐐烘偍鏁寸悊锛�MBA鏁�(sh霉)瀛�(xu茅)涔嬪繀鍌欏叕寮�锛岃€冪敓浜︽垨鐧婚寗鍦ㄨ伔鐮旂┒鐢熻珫澹囷紝鑸囧唬澶ц€冨弸涓€璧蜂氦娴�!
绶ㄨ集鎺ㄨ枽锛�
MBA鍌欒€冩敾鍫呴殠娈垫鏅哄畨鎺掕嫳瑾炲京(f霉)缈�(x铆)
銆€銆€銆愭憳瑕併€慚BA鏁�(sh霉)瀛�(xu茅)鍌欒€冩槸寰堝瀛�(xu茅)鍝＄殑闆ｉ锛屽皬绶ㄧ偤澶у绮惧績婧栧倷浜嗕竴浜涘繀鍌欏叕寮忥紝瀛�(xu茅)鍝″繀闋堟渻闈堟椿閬嬬敤銆�
銆€銆€鏌愪簺鏁�(sh霉)鍒楀墠n闋呭拰
銆€銆€1+2+3+4+5+6+7+8+9+…+n=n(n+1)/2
銆€銆€2+4+6+8+10+12+14+…+(2n)=n(n+1)
銆€銆€1^2+2^2+3^2+4^2+5^2+6^2+7^2+8^2+…+n^2=n(n+1)(2n+1)/6
銆€銆€1^3+2^3+3^3+4^3+5^3+6^3+…n^3=(n(n+1)/2)^2
銆€銆€1*2+2*3+3*4+4*5+5*6+6*7+…+n(n+1)=n(n+1)(n+2)/3
銆€銆€姝ｅ鸡瀹氱悊 a/sinA=b/sinB=c/sinC=2R 娉細 鍏朵腑 R 琛ㄧず涓夎褰㈢殑澶栨帴鍦撳崐寰�
銆€銆€浣欏鸡瀹氱悊 b2=a2+c2-2accosB 娉細瑙払鏄倞a鍜岄倞c鐨勫ぞ瑙�
銆€銆€鍏紡鍒嗛 鍏紡琛ㄩ仈寮�
銆€銆€涓夎涓嶇瓑寮�
銆€銆€|a+b|≤|a|+|b|
銆€銆€|a-b|≤|a|+|b|
銆€銆€|a|≤b<=>-b≤a≤b
銆€銆€|a-b|≥|a|-|b|
銆€銆€-|a|≤a≤|a|
銆€銆€姝ｅ鸡瀹氱悊 a/sina=b/sinb=c/sinc=2r 娉細 鍏朵腑 r 琛ㄧず涓夎褰㈢殑澶栨帴鍦撳崐寰�
銆€銆€鐩存１鏌卞伌(c猫)闈㈢⿳ s=c*h 鏂滄１鏌卞伌(c猫)闈㈢⿳ s=c'*h
銆€銆€姝ｆ１閷愬伌(c猫)闈㈢⿳ s=1/2c*h' 姝ｆ１鑷哄伌(c猫)闈㈢⿳ s=1/2(c+c')h'
銆€銆€鍦撹嚭鍋�(c猫)闈㈢⿳ s=1/2(c+c')l=pi(r+r)l 鐞冪殑琛ㄩ潰绌� s=4pi*r2
銆€銆€鍦撴煴鍋�(c猫)闈㈢⿳ s=c*h=2pi*h 鍦撻寪鍋�(c猫)闈㈢⿳ s=1/2*c*l=pi*r*l
銆€銆€寮ч暦鍏紡 l=a*r a鏄湏蹇冭鐨勫姬搴︽暩(sh霉)r >0 鎵囧舰闈㈢⿳鍏紡 s=1/2*l*r
銆€銆€閷愰珨楂旂⿳鍏紡 v=1/3*s*h 鍦撻寪楂旈珨绌嶅叕寮� v=1/3*pi*r2h
銆€銆€鏂滄１鏌遍珨绌� v=s'l 娉細鍏朵腑,s'鏄洿鎴潰闈㈢⿳锛� l鏄伌(c猫)妫遍暦
銆€銆€鏌遍珨楂旂⿳鍏紡 v=s*h 鍦撴煴楂� v=pi*r2h
銆€銆€鐠�(hu谩n)鐞冪恫(w菐ng)鏍″弸鎯呮彁绀�锛氱挵(hu谩n)鐞冪恫(w菐ng)鏍″湪鑱风爺绌剁敓鑰冭│闋婚亾鐐烘偍鏁寸悊锛�MBA鏁�(sh霉)瀛�(xu茅)涔嬪繀鍌欏叕寮�锛岃€冪敓浜︽垨鐧婚寗鍦ㄨ伔鐮旂┒鐢熻珫澹�锛岃垏寤ｅぇ鑰冨弸涓€璧蜂氦娴�!
绶ㄨ集鎺ㄨ枽锛�
MBA鍌欒€冩敾鍫呴殠娈垫鏅哄畨鎺掕嫳瑾炲京(f霉)缈�(x铆)
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