Question

Which x-value is in the domain of the function 7 (x) = 2cot(3x) + 4?

Answer 1

Answer:

The correct option is A

$\frac{\pi}{4}$

Explanation:

The domain of the given function:

$f(x)=2cot(3x)+4$

is given as:

$\lbrace x\in\Re:\frac{3x}{\pi}\notin Z\rbrace$

Since

$\frac{3x}{\pi}$

is not an integer, x must be

$\frac{\pi}{4}$