lim tanx-sinx
[单选题]当x→0时，tanx-sinx是x3的（）．A . 高阶无穷小B . 低阶无穷小C . 同阶但非等价无穷小D . 等价无穷小
2 求极限lim tanx-sinx
求极限underset(lim)(x→0)cotx（(1)/(sinx)-(1)/(x)）求极限$\underset{lim}{x→0}$cotx（$\frac
underset(lim)(x→α)dfrac(sinx-sinα)(x-α)．．
求极限underset(lim)(x→0)(（1-cosx）[x-ln（1+tanx）])/(si(n)^4x)．求极限$\underset{lim}{x→0}
lim_(xto0^+)(x^sinx-(sinx)^x)/(x^3)lnx$\lim_{x\to0^+}\frac{x^{sinx}-(sinx)^x}{x^
underset(lim)(x→0)dfrac(arctanx-x)(ln(1+2{x)^3)}= ____ ．= ____ ．
underset(lim)(x→0)(sin3x)/(2x)的值等于 ____ ．$\underset{lim}{x→0}\frac{sin3x}{2x}$的值
(3)lim-1+tanx -√1+sinx