Let ` f(x) =sqrt(9-x^(2))." then , dom " (f ) =?`A. `[-3,3]`B. `(-oo,- – InterviewSolution

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1.	Let ` f(x) =sqrt(9-x^(2))." then , dom " (f ) =?`A. `[-3,3]`B. `(-oo,-3]`C. `[3,oo)`D. `(-oo,-3] uu (4,oo)`
Answer» Correct Answer - A `f(x) ` is defined only water `9-x^(2) ge 0 rArr x^(2) 9 rArr -3 le x le 3. ` ` :. ` dom `(f) =[-3,3]`

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