求lim (sec^2 x求极限lim (sec^2 x - 1 )/(1-cos x) X-0请写出过程,
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求lim(sec^2x求极限lim(sec^2x-1)/(1-cosx)X-0请写出过程,求lim(sec^2x求极限lim(sec^2x-1)/(1-cosx)X-0请写出过程,求lim(sec^2
求lim (sec^2 x求极限lim (sec^2 x - 1 )/(1-cos x) X-0请写出过程,
求lim (sec^2 x
求极限lim (sec^2 x - 1 )/(1-cos x) X-0请写出过程,
求lim (sec^2 x求极限lim (sec^2 x - 1 )/(1-cos x) X-0请写出过程,
lim (sec^2 x - 1 )/(1-cos x)
=lim(tan^2x)/(2sin^2(x/2))
=lim(x^2 )/(0.5x^2)
=2
Limit[Sec[x]^2 - 1, x -> 0]=0 Limit[Sec[x^2] - 1, x -> 0]=0
结果就是2
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