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    thewife's Avatar
    thewife Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Feb 27, 2007, 01:14 PM
    Domain and Range
    determine the domain and range of f(x)=-2x squared + 6x+3
    asterisk_man's Avatar
    asterisk_man Posts: 476, Reputation: 32
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    #2

    Feb 27, 2007, 01:36 PM
    the "domain" is all legal x values
    are there any x values that would produce undefined results?

    the "range" is the set of all values f(x) will take on when you sweep x across the entire domain
    does f(x) have a minimum or maximum value?
    cool_dude's Avatar
    cool_dude Posts: 124, Reputation: 9
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    #3

    Feb 27, 2007, 04:30 PM
    just to add. Whenever there is no denominator or square root in the question x can be any value. So domain = xER
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