lim(sin2x/x)
求lim(x→0) (x+sin2x)/(x-sin2x)
lim sin2x/3x x趋向0
lim x-0 sin2x/x 求极限
lim X趋近0 sin7X除以sin2X
求极限 lim(sin2x/sin3x) x->π
lim(x趋向π)sin2x/tan3x
sin2x lim ------- x→0 tan3x
lim(X->0)sin2x/x =lim(X->0)2(sin2x/2x)=2
lim(x→0)(x-sin2x)/(x+sin5x)
lim(sin2x)/(x^3+3x) x趋向于0
lim(x->0)(tan3x+2x)/(sin2x+3x)
lim x→正无穷 sin2x/3x =什么