lim(x趋向于0)(tanx-sinx)/x^3

lim(x趋向于0)(tanx-sinx)/x^3=?

2个回答

lim(x→0)(tanx-sinx)/x^3
=lim(x→0)(sinx/cosx-sinx)/x^3
=lim(x→0)(1-cosx)/x^2
=lim(x→0)1/2x^2/x^2
=1/2