tan(x)-sin(x)等价无穷小tan(x)-sin(x)的等价无穷小

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tan(x)-sin(x)等价无穷小tan(x)-sin(x)的等价无穷小
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tan(x)-sin(x)等价无穷小tan(x)-sin(x)的等价无穷小
tan(x)-sin(x)等价无穷小
tan(x)-sin(x)的等价无穷小

tan(x)-sin(x)等价无穷小tan(x)-sin(x)的等价无穷小
原式=tan(x)*(1-cosx)=2sin^2(x/2)*tan(x)
sin(x/2)等价于x/2,tan(x)等价于x
原式等价于2*(x/2)^2*x=x^3/2

x-x=0