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Math Help - Ranges of function f(x)?

  1. #1
    Member looi76's Avatar
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    Ranges of function f(x)?

    Find the ranges of this function f(x), defined over the largest possible domains.
    x^2 + x + 1
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  2. #2
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    Quote Originally Posted by looi76 View Post
    Find the ranges of this function f(x), defined over the largest possible domains.
    x^2 + x + 1
    Try to find the minimum of  f(x) .
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  3. #3
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    x^2+x+1=(x+0.5)^2+0.75
    \implies f(x)\in \mathbb{R}, f(x)\geq 0.75
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