Find the Domain and Range of the Function $$f ( x ) = - 4 \cos ^ { 2 } x$$

question 410

Multiple Choice

Find the domain and range of the function.
- $$f ( x ) = - 4 \cos ^ { 2 } x$$

• A) Domain: \(( - \infty , 0 ]\); range: \(( - \infty , \infty )\)
• B) Domain: \(( - \infty , \infty )\); range: \(( - \infty , 0 ]\)
• C) Domain: \([ - 4,0 ]\); range: \(( - \infty , \infty )\)
• D) Domain: \(( - \infty , \infty )\); range: \([ - 4,0 ]\)

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