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Find the range : (i) f(x) = 2x^(2) (...

Find the range :
(i) `f(x) = 2x^(2)`
(ii) `f(x) = -x^(2)`

Text Solution

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`f(x) = 2x^(2)`
Domain = R
`x in (-oo, +oo)`
`x^(2) ge 0, 2x^(2) ge 0`
(ii) `f(x) = -|x|`
Domain = R
Range `= (-oo, 0]`
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