求极限limx->π/3 tan^3x-3tanx/cos(x+π/6)
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求极限limx->π/3 tan^3x-3tanx/cos(x+π/6)
如题
如题
![求极限limx->π/3 tan^3x-3tanx/cos(x+π/6)](/uploads/image/z/17383129-25-9.jpg?t=%E6%B1%82%E6%9E%81%E9%99%90limx-%3E%CF%80%2F3+tan%5E3x-3tanx%2Fcos%28x%2B%CF%80%2F6%EF%BC%89)
lim(x->π/3) tan^3x-3tanx/cos(x+π/6)=lim(x->π/3)[3 tan^2xsec^2x-3sec^2x]/[-sin(x+π/6)]=-24
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