The domain of [tex]tanx[/tex] is [tex]R - (n\pi -\frac{\pi }{2})[/tex].
The range of the given function [tex]y = tanx[/tex] is the set of all real numbers.
What is domain?
The domain of a function is the set of values that we are allowed to plug into our function.
What is range?
The range of a function is the set of its possible output values.
According to the given question.
We have a function
[tex]y = tanx[/tex]
The above function can be written as
[tex]y = \frac{sinx}{cosx}[/tex]
⇒ [tex]tanx[/tex] is defined for all values except the values that makes [tex]cosx = 0[/tex], a fraction with denominator is not defined.
And we know that
[tex]cosx = 0 \ \forall \ x \in \frac{(2n+1)\pi }{2} \ where \ n \in Z[/tex]
Hence, for all these values, [tex]tanx[/tex] is not defined.
Therefore, the domain of [tex]tanx[/tex] is [tex]R - (n\pi -\frac{\pi }{2})[/tex].
Since, the domain of [tex]tanx[/tex] is [tex]R - (n\pi -\frac{\pi }{2})[/tex], so when we input these values in the given function we get only real numbers.
Therefore, the range of the given function [tex]y = tanx[/tex] is the set of all real numbers.
Thus, option D and B are correct.
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