What is the domain of cot(3θ) ?

The domain of cot(3θ) is pi/3 n<θ< pi/3+pi/3 n

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domain of cot(3θ)

domain

cot (3 θ)

\frac{π}{3} n < θ < \frac{π}{3} + \frac{π}{3} n

Interval Notation

(\frac{π}{3} n, \frac{π}{3} + \frac{π}{3} n)

Solution steps

Take the denominator(s) of

cot (3 θ)

and compare to zero:

θ = \frac{π}{3} n

Periodicity of

cot (3 θ) : \frac{π}{3}

Combine period:

\frac{π}{3} n \leq θ < \frac{π}{3} + \frac{π}{3} n

and undefined points.

The domain is

\frac{π}{3} n < θ < \frac{π}{3} + \frac{π}{3} n

\frac{x ^{2} - 12}{2 x}

7 x^{2} + 3 x - 1

f (x) = \frac{x - 2}{2 x ^{2} + x - 10}

f (x) = \frac{x - 4}{2 x + 2}

\frac{2}{x ^{2} - 2 x - 35}