What is the domain of f(x)=cot(3x) ?

The domain of f(x)=cot(3x) is pi/3 n<x< pi/3+pi/3 n

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domain of f(x)=cot(3x)

domain

f (x) = cot (3 x)

\frac{π}{3} n < x < \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 x)

and compare to zero:

x = \frac{π}{3} n

Periodicity of

cot (3 x) : \frac{π}{3}

Combine period:

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

and undefined points.

The domain is

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

f (x) = 3 7 x - 21 + x - 5

y = \frac{t ^{2}}{t - 2}

f (x) = 2 x^{2} + x^{3}

f (x) = - x + 4 - 2

f (x) = \frac{x + 3}{x - 8}

What is the domain of f(x)=cot(3x) ?
The domain of f(x)=cot(3x) is pi/3 n<x< pi/3+pi/3 n