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Question

x=nπ+3π4 or x=mπ+tan112, where m, nI

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Solution

The given equation is

2tan2x+tan x1=0

(tan x+1)(2 tan x1)=0

tan x=1 or tanx=12

tan x=tan 3π4 or tan x=tan(tan112)

x=nπ+3π4 or x=mπ+tan112, where m, nI.


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