Find the Domain and Range of the Function $$f ( x ) = - 9 \cot ^ { 2 } x$$

question 349

Multiple Choice

Find the domain and range of the function.
- $$f ( x ) = - 9 \cot ^ { 2 } x$$

• A) Domain: \(x \neq \frac { \pi } { 2 } + n \pi\), for all integers \(n\); range \([ 0 , \infty )\)
• B) Domain: \(x \neq n \pi\), for all integers \(n\); range \(( - \infty , 0 ]\)
• C) Domain: \(x \neq n \pi\), for all integers \(n\); range \([ 0 , \infty )\)
• D) Domain: \(x \neq \frac { \pi } { 2 } + n \pi\), for all integers \(n\); range \(( - \infty , \infty )\)

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