证明:Lim (1/xsinx-xsin1/x) =1 x→0
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证明:Lim(1/xsinx-xsin1/x)=1x→0证明:Lim(1/xsinx-xsin1/x)=1x→0证明:Lim(1/xsinx-xsin1/x)=1x→0lim(x→0)[(1/x)si
证明:Lim (1/xsinx-xsin1/x) =1 x→0
证明:Lim (1/xsinx-xsin1/x) =1 x→0
证明:Lim (1/xsinx-xsin1/x) =1 x→0
lim(x→0) [(1/x)sinx-xsin(1/x)]
=lim(x→0) sinx/x-lim(x→0) xsin(1/x),0乘以有界函数都是0
=1-0
=1
求极限的一道题 lim(x趋于0) (xsin 1/x-1/xsinx)=
根据函数极限定义证明lim (x→0)xsin(1/x)=0
证明:Lim (1/xsinx-xsin1/x) =1 x→0
lim(x趋向0) 1-cos2x/xsinx
lim(x~无穷)xsin1/x-1/xsinx
lim(x→0)(1-cos4x)/xsinx
lim(x→0)(1-cos2x)/xsinx
lim(x->0)(2xsinx)/(secx-1)
证明当x→0时,[√(1+xsinx)-√(cosx)]~(3/4)x^2.当x→0时,[√(1+xsinx)-√(cosx)]~(3/4)x^2 lim[√(1+xsinx)-√(cosx)]/[(3/4)x^2] =lim(1+xsinx-cosx)/{[√(1+xsinx)+√(cosx)][(3/4)x^2]} =(2/3)lim(1+xsinx-cosx)/(x^2) =(2/3)lim(sinx+xcosx+si
.证明当x→0时,[√(1+xsinx)-√(cosx)]~(3/4)x^2.当x→0时,[√(1+xsinx)-√(cosx)]~(3/4)x^2 lim[√(1+xsinx)-√(cosx)]/[(3/4)x^2] =lim(1+xsinx-cosx)/{[√(1+xsinx)+√(cosx)][(3/4)x^2]} =(2/3)lim(1+xsinx-cosx)/(x^2) =(2/3)lim(sinx+xcosx+s
lim xsin1/x(x->0)极限为1吗?lim xsin1/x(x->0),lim xsinx(x->0),lim (sinx)/x(x->无穷),lim xsin(1/x)(x无穷)四个中哪个极限为1,其他等于什么?答案有误,这是选择题,肯定有个为1
求解几个简单的高数习题,请详解.1.lim 0〔sin2x/sin5x] 2.limx~0[tan3x/sin2x]3.limx~0[xcot2x]4.limx~0 [1-cos2x]/[xsinx]5.limx~无穷大 xsin(1/x)
lim(x→∞) (xsin(1/x)+1/x(sinx))
lim(sinx/x+xsin(1/x)) = x->无穷
x趋近于无穷 lim [xsin(1/3x) ]=?
lim x→∞ xsin(1/x)求极限
lim(x→0)xsin *1/x^2
lim 1/(sinx)^2-1/xsinx,x趋近无穷大