y=tan^2 x +2tan x
=tan²x+2tanx+1-1
=(tanx+1)²-1
最小值是-1
y=tan^2 x +2tan x如何求该函数最小值?
y=tan^2 x +2tan x如何求该函数最小值?
数学人气:976 ℃时间:2019-10-01 21:16:26
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