Question

find the domain of f(x) =1/1-2cosx​

Answer 1

Step-by-step explanation:

Given, a function -

f

(

x

)

=

1

1

−

2

cos

x

We need to find the domain of the given function. Since the denominator can not be zero, then -

1

−

2

cos

x

=

0

should be removed from the domain of the function.

Hence,

cos

x

=

1

2

⇒

x

=

2

n

π

±

π

3

Hence, the domain of the function -

x

∈

R

−

(

2

n

π

±

π

3

)

Where

n

∈