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f(x)= -2cos 2 x + 3cosx + 1 find the domain and the range of x

f(x)=  -2cos2x + 3cosx + 1
find the domain and the range of x 

Grade:11

1 Answers

Gosula Madhukar
84 Points
4 years ago
Domain of f(x) is ‘R’
range of the function is (-4,2)
I think Iam right.
best of luck!!!
if u have any further doubt please post it.
bye
 

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