lim(x趋向于0)(1-cosx^2)/((x^3)*sinx)

问题描述:

lim(x趋向于0)(1-cosx^2)/((x^3)*sinx)

lim(x趋向于0)(1-cosx^2)/((x^3)*sinx)
=lim(x趋向于0)[(x^2)^2]/2/((x^3)*x)
=1/2 lim x^4/x^4
=1/2