(cos2x)的1+cotx²次方的极限,当x趋向于0时.
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(cos2x)的1+cotx²次方的极限,当x趋向于0时.
(cos2x)的1+cotx²次方的极限,当x趋向于0时.
(cos2x)的1+cotx²次方的极限,当x趋向于0时.
lim(x→0) (cos2x)^(1+(cotx)^2)
=lim(x→0) (cos2x)^(1/(sinx)^2)
=lim(x→0) (1-2(sinx)^2)^(1/(sinx)^2)
=lim(x→0) (1-2(sinx)^2^(1/[-2(sinx)^2])^(-2)
=e^(-2)