lim(1+cosx)的2secx次方 当x—>π/2 (派.的极限是多少~

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lim(1+cosx)的2secx次方当x—>π/2(派.的极限是多少~lim(1+cosx)的2secx次方当x—>π/2(派.的极限是多少~lim(1+cosx)的2secx次方当x—>π/2(派

lim(1+cosx)的2secx次方 当x—>π/2 (派.的极限是多少~
lim(1+cosx)的2secx次方 当x—>π/2 (派.的极限是多少~

lim(1+cosx)的2secx次方 当x—>π/2 (派.的极限是多少~
lim(1+cosx)^2secx=lim[(1+cosx)^1/cosx]^2=e^2
x—>π/2 x—>π/2