lim x→0{1-cos(1-cos2x)}/sinx^4
1.lim(x→0)1-cos2x/x*sinx [x和sinx是一起的]
lim x→0 (1-cosx√cos2x√cos3x)/(e^x+1)sinx dx
求lim x→0 1-cos2x/x·sinx极限
求lim(x→π/4) (sin2x-cos2x-1)/(cosx-sinx)的极限
lim(x→0)(1-cos2x)/xsinx
lim(x→π/4)(sinx-cosx)/cos2x
设f(sinx)=cos2x+1求f(cos*x)
lim(cosx+cos2x+ cos3x+…+ cos nx-n)/(cosx-1) (x趋于0)
2.5计算极限lim(x→0) (1-cos2x)/xsinx
求极限:lim(1/sinx^2x-(cos^2x)/x^2) X趋于0
已知2sinx=cosx,求cos2x+cos2x+1/cos^2x的值.
lim(x→0+)(1-cos√x)/In(1+xe^x)= lim(x→0)√(1-cosx)/sinx=