Match each statement with its correct completion.
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  1. f(a)f(x)\displaystyle {f{{\left({a}\right)}}}\geq{f{{\left({x}\right)}}} for all x\displaystyle {x} near a\displaystyle {a}.
  2. f(a)\displaystyle {f{{\left({a}\right)}}} is a local maximum or minimum.
  3. f(a)f(x)\displaystyle {f{{\left({a}\right)}}}\leq{f{{\left({x}\right)}}} for all x\displaystyle {x} in the domain of f(x)\displaystyle {f{{\left({x}\right)}}}.
  4. f(a)f(x)\displaystyle {f{{\left({a}\right)}}}\geq{f{{\left({x}\right)}}} for all x\displaystyle {x} in the domain of f(x)\displaystyle {f{{\left({x}\right)}}}.
  5. f(a)\displaystyle {f{{\left({a}\right)}}} is a global maximum or minimum.
  6. f(a)f(x)\displaystyle {f{{\left({a}\right)}}}\leq{f{{\left({x}\right)}}} for all x\displaystyle {x} near a\displaystyle {a}.