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Find the maximum and the minimum values, if any, of the following functions f(x)=|x+3| for all `x in Rdot`

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Given functions `f(x)=|x+3|` for all `x in R`
`-oo ltxltoo`
`=>ooltx+3ltoo`
`=>0leabs(x+3)leoo`
Minimum`=0`
maximum`=`not exist
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