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sin2x/〔1+sinx^2議音協持蛍

泌夕侭幣

B(1/2,1/4)=2〈(sinx)^(2*1/4-1)*(conx)^(2*1/2-1); B痕方p=1/2,q=1/4. B(1/2,1/4)=P(1/2)*P(1/4)/P(3/4);P,B痕方葎天性痕方。 P(1/2)=pi^1/2購噐P1/4珊嗤泣諒籾pi=3.1415926..... 総翌P(1/4)*P(3/4)=pi/sin1/4*pi B議持蛍袈律頁[0,pi/2]...

朔中椎倖。。。

1.譜u=tan(1/2*x),侭參sinx=2u/(1+u^2),cosx=(1-u^2)/(1+u^2),dx=2/(1+u^2)du 旗秘晒酒誼: 圻塀=〈1/u(3-u^2)du =〈1/3*1/udu+〈2/3*1/(3-u^2)du =-2/3*lnlu^2-3l+1/3*lnlul+C =-2/3*lnltan(1/2*x)^2-3l+1/3*lnltan(1/2*x)l+C 2.蛍徨蛍銚揖核sinx, ...

宸倖喘欺阻代駅器隈夸。 匯倖痕方曳匯倖痕方議自渣亀伴柮旁眩什方蛍艶箔擬侭誼欺議痕方峙 軸limx★af(x)/g(x)=limx★af¨(x)/g¨(x) 宸劔厘断祥辛參宥狛互竣箔擬繍互肝邁散廬晒撹械方遑隼朔旋喘眉叔痕方箔擬巓豚來宴辛參晒葎恷酒侘塀隼朔揮...

兜屈侭僥議塘圭。 sin²x-sinx =sin²x-sinx+¼-¼ =(sinx-½)²-¼ 互嶄方僥斤兜嶄侭僥議児云柴麻議勣箔曳熟互軸邪協低兜嶄侭僥議児云柴麻厮将頼畠短嗤諒籾阻壓緩児粥貧壅潤栽仟議方僥岑紛泣。 咀緩匯協勣母...

泌夕侭幣

sin2x/sinx-cosx-sinx+cosx/tan2x-1 =sin2x*(sinx+cosx)/(sinx-cosx)(sinx+cosx)-(sinx+cosx)/(sin2x/cos2x)-1 =sin2x*(sinx+cosx)/(sin2x-cos2x)-cos2x(sinx+cosx)/(sin2x-cos2x) =(sinx+cosx)(sin2x-cos2x)/(...

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