当x→0时,x^2(sinx)^1/3的无穷小量关于x的阶是多少
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x->0
sinx = x+o(x)
(sinx)^(1/3) = x^(1/3) + o(x^(1/3))
x^2.(sinx)^(1/3) = x^(7/3) + o(x^(7/3))
x的阶是=7/3
sinx = x+o(x)
(sinx)^(1/3) = x^(1/3) + o(x^(1/3))
x^2.(sinx)^(1/3) = x^(7/3) + o(x^(7/3))
x的阶是=7/3
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