limx-0In(1+x2)/sin(1+x2)

求极限limx趋近于0(arcsinx/x)^(1/x2)求极限limx趋近于0(arcsinx/x)^(1/x2)求极限limx趋近于0(arcsinx/x)^(1/x2)

求极限limx→0,X2,sin2,1/x求极限limx→0,X2,sin2,1/x求极限limx→0,X2,sin2,1/xlim(x→∞)x²*(sin1/x)²显然在x趋于∞

sin(1/x2)的导数sin(1/x2)的导数sin(1/x2)的导数-2cos(1/x^2)/x^3

sin(1/x2)的导数.为什么等于-cos(1/x2)sin(1/x2)的导数.为什么等于-cos(1/x2)sin(1/x2)的导数.为什么等于-cos(1/x2)令t=x/2y=sinty''=(

高数极限,不定积分,定积分①limx→3(x2-4x+3/sin(x-3))②limx→∞(x+1/x-2)*x③∫x2*√1+x3dx④∫xe(-x)dx⑤∫d(2x+3)②是limx→∞(x+1/

x2-3x-1=0,求①x21/x2;②x2-1/x2x2-3x-1=0,求①x21/x2;②x2-1/x2x2-3x-1=0,求①x21/x2;②x2-1/x2∵x2-3x-1=0∴X-2-1/X=

x2.sinα-y2.cosα=1(0x2.sinα-y2.cosα=1(0x2.sinα-y2.cosα=1(0x2sinα+y2cosα=1,即x2/(1/sinα)+y2/(1/cosα)=1,

sin(x-1)/1-x2的极限sin(x-1)/1-x2的极限sin(x-1)/1-x2的极限X趋于什么

limsin(x2-1)/x-1limsin(x2-1)/x-1limsin(x2-1)/x-1

y=sin√1-x2y=sin√1-x2y=sin√1-x2y''=cos√(1-x^2)*(-2x)*(1/2)/√(1-x^2)=-x/√(1-x^2)*cos√(1-x^2)

limx→-∞x/√1+x2=limx→-∞1/-√1+1/x2这个是怎么化简过来的求解释limx→-∞x/√1+x2=limx→-∞1/-√1+1/x2这个是怎么化简过来的求解释limx→-∞x/√

求极限limX→∞[1+x2/2-√(1+x2)]/(cosx–ex2)sinx2亲求极限limX→∞[1+x2/2-√(1+x2)]/(cosx–ex2)sinx2亲求极限limX→∞[1+x2/2

x2-3x+1=0x2/(x4-x2+1)x2-3x+1=0x2/(x4-x2+1)x2-3x+1=0x2/(x4-x2+1)请问这是什么啊?希望能把问题完善了好吧?

x2-5x+1=0则x2+x2/1x2-5x+1=0则x2+x2/1x2-5x+1=0则x2+x2/1你可以参见“韦达定理”方程两个根的积是1,说明他们互为倒数.x^2+1/x^2=(x+1/x)^2

求极限limx→o(cossinx-cosx)/(x2(1-cosx))=?求极限limx→o(cossinx-cosx)/(x2(1-cosx))=?求极限limx→o(cossinx-cosx)/

求limx→2（x2-3x+1/x-2）的极限求limx→2（x2-3x+1/x-2）的极限求limx→2（x2-3x+1/x-2）的极限

limx趋近于0x2/sin2（x/3）limx趋近于0x2/sin2（x/3）limx趋近于0x2/sin2（x/3）lim(x->0)x^2/(sin(x/3))^2(0/0)=lim(x->0)

已知x2－4x+1=0,求x2／(x2)2－3x2+1已知x2－4x+1=0,求x2／(x2)2－3x2+1已知x2－4x+1=0,求x2／(x2)2－3x2+1x2－4x+1=0两边同除以xx-4+

（巧解题)已知x2+3x2+1=0,求x2+1/x2的值?（巧解题)已知x2+3x2+1=0,求x2+1/x2的值?（巧解题)已知x2+3x2+1=0,求x2+1/x2的值?x2+3x2+1=0中的3

如何用求Matlab求方程组?假设有矩阵A=[sin(x1)+cos(x2),1;cos(x2),0],B=[sin(x2+x1)+cos(x1),1;sin(x2),0]现令A和B相等,怎么求出X1