Asked by edward
what is the domain and range of the function
F(x)= 1/1-2cosx
F(x)= 1/1-2cosx
Answers
Answered by
Steve
domain is all reals except where the denominator is zero
1-2cosx = 0 when
cosx = 1/2
x = 2kπ ± π/3
so the domain is all reals except 2kπ ± π/3
1-2cosx = 0 when
cosx = 1/2
x = 2kπ ± π/3
so the domain is all reals except 2kπ ± π/3
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