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Find the domain and range of the following real functions?

$\left(1\right)f\left(x\right)=-\left|x\right|\phantom{\rule{0ex}{0ex}}\left(2\right)f\left(x\right)=\sqrt{9-{x}^{2}}\phantom{\rule{0ex}{0ex}}\left(3\right)f\left(x\right)=\sqrt{x-1}\phantom{\rule{0ex}{0ex}}\left(4\right)f\left(x\right)=\left|x-1\right|$

Q.1 https://www.meritnation.com/ask-answer/question/find-the-domain-and-range-f-x-x/relations-and-functions/10963305

Q.3 https://www.meritnation.com/ask-answer/question/domain-and-range-of-function-f-x-root-x-1/relations-and-functions/6934191

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