lim(x→0)(1-cos2x)/xsinx

来源：学生作业帮助网 编辑：作业帮 时间：2024/11/27 17:12:47
lim(x→0)(1-cos2x)/xsinx
x)ըx6@SP79بBS83&H~ !P![#Zqi5D= `E!@6yvP7؀98]b.Stgvj$!L++H!-۞N{>eų-o}o&$+ Nu u!jladGדO;ڞv~= `Cu!09Gd؆g]]Ow,{ں$pkjb1AD_(>p

lim(x→0)(1-cos2x)/xsinx
lim(x→0)(1-cos2x)/xsinx

lim(x→0)(1-cos2x)/xsinx
1-cos2x=2sin²x
（1-cos2x）/xsinx =2sinx/x
lim(x→0)=2lim(x→0)sinx/x =2

lim(x→0)(1-cos2x)/xsinx=lim(x→0)(1-cosx平方+sinx平方）/xsinx
=lim(x→0)2sinx平方/xsinx
=lim(x→0)2sinx/x
然后用洛必达 =2lim(x→0) （sinx）'/x'
=2lim(x→0) cosx
=2

上下分别求导 lim(x-0)2sin2x/(sinx+xcosx)
把x=0带入cosx 上下分别求导 lim(x-0)4cos2x/(cosx+1)
把x=0带入 4/(1+1)=2

lim(x→0)(1-cos2x)/xsinx 求lim(1-cos2x)/x^2极限,x→0 lim((x→0)(1-cos2x)/(x*sinx) 求极限lim(x~0)((e^x+e^2x+e^3x)/3)^1/xs 2.5计算极限lim(x→0) (1-cos2x)/xsinx 求极限lim(x→0) tanx-sinx/1-cos2x lim(x趋向0) 1-cos2x/xsinx lim(x→0)(1-cos2x)/(x*sin2x) lim(x→0)(xcot2x) lim(x→无穷)(1+(1/2x))^x 求教lim x→0 ( cos x / cos2x )^(1/x^2) lim x→0 ln(cos5x)/ln(cos2x)要过程 求lim(x→∞)1-cos2x/xsinx lim(x→0)(cos2x-cos3x)/{[（1+x^2）^1/2]-1} lim(x→0)(cos2x-cos3x)/{[（1+x^2）^1/2]-1} lim x→0 (1-cosx√cos2x√cos3x)/(e^x+1)sinx dx 求lim x→0 1-cos2x/x·sinx极限 计算题 lim(x→0)【(√4-x^2-2)/(1-cos2x)】求极限 lim((1-cos2x)/(xsinx)) 当X-->0时的极限 lim(x趋向0)(1-cos2x)/xsinx怎么解?